Datasets:

RazinAleks

/

SO-Python_QA-API_USAGE_class

like 0

2017-11-16T16:08:00.000

python-2.7,pyomo,coin-or-cbc

You could try to set the bound gap tolerance such that it will accept the other answer. I'm surprised that the solver status is coming back with error if there is a feasible solution found. Could you print out the whole results object?

I am trying to solve Optimisation problem with pyomo (Pyomo 5.3 (CPython 2.7.13 on Linux 3.10.0-514.26.2.el7.x86_64)) using CBC solver (Version: 2.9.8) and specifying a time limit in solver of 60 sec. The solver is getting a feasible solution (-1415.8392) but apparently not yet optimal (-1415.84) as you can see below. After time limit ends model seemingly exits with an error code. I want to print or get values of all variables of feasible solution using CBC in specified time limit. Or is there any other way by which I can set, if Model gets 99% value of an Optimal solution, to exit and print the feasible solution. The error code is posted below. Cbc0004I Integer solution of -1415.8392 found after 357760 iterations and 29278 nodes (47.87 seconds) Cbc0010I After 30000 nodes, 6350 on tree, -1415.8392 best solution, best possible -1415.84 (48.87 seconds) Cbc0010I After 31000 nodes, 6619 on tree, -1415.8392 best solution, best possible -1415.84 (50.73 seconds) Cbc0010I After 32000 nodes, 6984 on tree, -1415.8392 best solution, best possible -1415.84 (52.49 seconds) Cbc0010I After 33000 nodes, 7384 on tree, -1415.8392 best solution, best possible -1415.84 (54.31 seconds) Cbc0010I After 34000 nodes, 7419 on tree, -1415.8392 best solution, best possible -1415.84 (55.73 seconds) Cbc0010I After 35000 nodes, 7824 on tree, -1415.8392 best solution, best possible -1415.84 (57.37 seconds) Traceback (most recent call last): File "model_final.py", line 392, in solver.solve(model, timelimit = 60*1, tee=True) File "/home/aditya/0r/lib/python2.7/site-packages/pyomo/opt/base/solvers.py", line 655, in solve default_variable_value=self._default_variable_value) File "/home/aditya/0r/lib/python2.7/site-packages/pyomo/core/base/PyomoModel.py", line 242, in load_from % str(results.solver.status)) ValueError: Cannot load a SolverResults object with bad status: error When I run the model generated by pyomo manually using the same command-line parameters as pyomo /usr/bin/cbc -sec 60 -printingOptions all -import /tmp/tmpJK1ieR.pyomo.lp -import -stat=1 -solve -solu /tmp/tmpJK1ieR.pyomo.soln it seems to exit normally and also writes the solution as shown below. Cbc0010I After 35000 nodes, 7824 on tree, -1415.8392 best solution, best possible -1415.84 (57.06 seconds) Cbc0038I Full problem 205 rows 289 columns, reduced to 30 rows 52 columns Cbc0010I After 36000 nodes, 8250 on tree, -1415.8392 best solution, best possible -1415.84 (58.73 seconds) Cbc0020I Exiting on maximum time Cbc0005I Partial search - best objective -1415.8392 (best possible -1415.84), took 464553 iterations and 36788 nodes (60.11 seconds) Cbc0032I Strong branching done 15558 times (38451 iterations), fathomed 350 nodes and fixed 2076 variables Cbc0035I Maximum depth 203, 5019 variables fixed on reduced cost Cbc0038I Probing was tried 31933 times and created 138506 cuts of which 0 were active after adding rounds of cuts (4.431 seconds) Cbc0038I Gomory was tried 30898 times and created 99534 cuts of which 0 were active after adding rounds of cuts (4.855 seconds) Cbc0038I Knapsack was tried 30898 times and created 12926 cuts of which 0 were active after adding rounds of cuts (8.271 seconds) Cbc0038I Clique was tried 100 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds) Cbc0038I MixedIntegerRounding2 was tried 30898 times and created 13413 cuts of which 0 were active after adding rounds of cuts (3.652 seconds) Cbc0038I FlowCover was tried 100 times and created 4 cuts of which 0 were active after adding rounds of cuts (0.019 seconds) Cbc0038I TwoMirCuts was tried 30898 times and created 15292 cuts of which 0 were active after adding rounds of cuts (2.415 seconds) Cbc0038I Stored from first was tried 30898 times and created 15734 cuts of which 0 were active after adding rounds of cuts (0.000 seconds) Cbc0012I Integer solution of -1411.9992 found by Reduced search after 467825 iterations and 36838 nodes (60.12 seconds) Cbc0020I Exiting on maximum time Cbc0005I Partial search - best objective -1411.9992 (best possible -1415.4522), took 467825 iterations and 36838 nodes (60.12 seconds) Cbc0032I Strong branching done 476 times (1776 iterations), fathomed 1 nodes and fixed 18 variables Cbc0035I Maximum depth 21, 39 variables fixed on reduced cost Cuts at root node changed objective from -1484.12 to -1415.45 Probing was tried 133 times and created 894 cuts of which 32 were active after adding rounds of cuts (0.060 seconds) Gomory was tried 133 times and created 1642 cuts of which 0 were active after adding rounds of cuts (0.047 seconds) Knapsack was tried 133 times and created 224 cuts of which 0 were active after adding rounds of cuts (0.083 seconds) Clique was tried 100 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.001 seconds) MixedIntegerRounding2 was tried 133 times and created 163 cuts of which 0 were active after adding rounds of cuts (0.034 seconds) FlowCover was tried 100 times and created 5 cuts of which 0 were active after adding rounds of cuts (0.026 seconds) TwoMirCuts was tried 133 times and created 472 cuts of which 0 were active after adding rounds of cuts (0.021 seconds) ImplicationCuts was tried 25 times and created 41 cuts of which 0 were active after adding rounds of cuts (0.003 seconds) Result - Stopped on time limit Objective value: -1411.99922848 Lower bound: -1415.452 Gap: 0.00 Enumerated nodes: 36838 Total iterations: 467825 Time (CPU seconds): 60.13 Time (Wallclock seconds): 60.98 Total time (CPU seconds): 60.13 (Wallclock seconds): 61.01 The top few lines of the CBC solution file are: Stopped on time - objective value -1411.99922848 0 c_e_x1454_ 0 0 1 c_e_x1455_ 0 0 2 c_e_x1456_ 0 0 3 c_e_x1457_ 0 0 4 c_e_x1458_ 0 0 5 c_e_x1459_ 0 0 6 c_e_x1460_ 0 0 7 c_e_x1461_ 0 0 8 c_e_x1462_ 0 0 Can anyone tell me how can I get these values without generating any error? Thanks in advance.

Error reported while running pyomo optimization with cbc solver and using timelimit

2017-11-16T18:57:00.000

python-3.x,tkinter,tkinter-canvas

You can't pause the update of the canvas without pausing the entire GUI. A simple solution would be for you to not draw to the canvas until you're ready for the update. Instead of calling canvas commands, push those commands onto a queue. When you're ready to refresh the display, iterate over the commands and run them. You could also do your own double-buffering, where you have two canvases. The one you are actively drawing would be behind the visible one. When you are ready to display the results, swap the stacking order of the canvases.

I'm writing a graphics program in Python and I would like to know how to make a Canvas update only on-demand; that is, stop a canvas from updating every run of the event loop and instead update only when I tell it to. I want to do this because in my program I have a separate thread that reads graphics data from standard input to prevent blocking the event loop (given that there's no reliable, portable way to poll standard input in Python, and polling sucks anyway), but I want the screen to be updated only at intervals of a certain amount of time, not whenever the separate thread starts reading input.

How to make tkinter Canvas update only on-demand?

2017-11-16T22:45:00.000

python,praw

Didn't find it in the docs, but a friend who knows a bit of raw helped me out. Use for message in r.inbox.messages() (where r is an instance of reddit) to get the messages. Use message.text to get the content, and message.subject to get the title.

I'm creating a Reddit bot with praw, and I want to have the bot do things based on private messages sent to it. I searched the documentation for a bit, but couldn't find anything on reading private messages, only sending them. I want to get both the title and the content of the message. So how can I do this?

How to read private messages with PRAW?

2017-11-17T08:33:00.000

python,r,logistic-regression

Try the 'VGAM' package. There is a function called vglm. example: vglm(Var2~factor(Var1),cumulative(parallel = F),data) generalized order model cumulative(parallel=T) will perform a proportional odds model. parallel=F is the default.

I would like to fit a generalized ordered logit model to some data I have. I first tried to use the ordered logit model using the MASS package from R, but it seems that the proportional odds assumption is violated by the data. Indeed, not all independent variables do exert the same effect across all categories of the dependent variable. Hence I am a bit blocked. I say that I could use the generalized ordered logit model instead, but could not find how to use it. Indeed, I can not find any package on either R or python that coud help me on that. If someone has any hints on packages I could use, it would be of great help! Thank you very much!

generalized ordered logit in R or python

2017-11-17T13:20:00.000

python,r,stan

As far as I know, they are not any Python libraries that do what the brms and rstanarm R packages do, i.e. come with precompiled Stan models that allow users to draw from the predictive distribution in the high-level language. There are things like prophet and survivalstan but those are for a pretty niche set of models.

I'm trying to move from using stan in R (I've mainly used the brms package) to pystan, but having trouble locating any methods in pystan that will give me predictive posterior distributions for new data. In R, I've been using brms::posterior_linpred() to do this. Does anyone know if this is possible in pystan? If not, can it be bolted on without too much problem?

how to obtain predictive posteriors in pystan?

2017-11-17T21:38:00.000

python,python-3.x,cx-freeze

If you are using cx_Freeze 5.1, there was a bug that resulted in this error. It has been corrected in the source so if you checkout the latest source and compile it yourself it should work for you. If not, let me know!

When I run my compiled program (cx_Freeze) it says __init__line 31. no module named codecs. I have Python 3.6, does anybody know why it says that, and how to maybe fix it? I have seen the other questions here on StackOverflow, but they don't seem to solve the problem for me and possibly other too. Thanks in advance!

Python cx_Freeze __init__ "no module named codecs"

2017-11-18T03:44:00.000

python,pip

As @metatoaster suggested, python setup.py develop reflects changes immediately in the environment, and makes the new functions available. I haven't tried @Paul H's suggestion which is pip install . -e. Thank you both for your comments, problem is solved.

I created and installed a python package by doing the following: coding a bunch of functions in an init.py file and run 'python setup.py install dist' to create a tar.gz, which was installed through pip. Everything works well and I can import the package and the functions. I decided to add a new function in the init file, and redid the whole procedure described above to reinstall (or update) my package. The new function added doesn't seem to be available when importing the package, even after update. Any ideas on how to update my package?

Python: upgrade my own package

2017-11-18T19:52:00.000

python,django,pip,virtualenv

You can't tell pip where to install packages. There's a standard place for packages, and that's where it installs them. pip makes sure it installs utilities (such as django-admin) in the path, so when the virtual environment is activated you can run it.

I am new to python/django/pip. I created a virtualenv and I was in the bin dir when I did a pip install django. It created the django files there which is not what I wanted. So I did pip uninstall django. Then I created a folder called web in my virtualenv root and tried pip install again. This time it said loading from cache and installed django in bin folder again. So I deleted it and tried again with --no-cache-dir. This downloaded django fresh, but I am still finding the installation in bin directory! This is driving me crazy, how can I get it to install in the web directory? Any help much appreciated.

Django not installing in folder where I want

2017-11-19T04:22:00.000

python,sql,django

The answer is django celery. Its for any tasks which need to be run with a condition. Look at the beats functionality for your use in celery

I'm making an elimination style voting website. People log in, vote for their least favorite participant, and at the end of the day the person with the most votes goes inactive. Almost everything works: The log in, the voting, etc. But I have no idea how to make a program that checks for the most votes and alters the database to change the status of a participant at a particular time without needing a user to enter the website. I don't even know where to put the code. And how would I make sure it's constantly running? The way I see it, views.py only works when a user goes to the URL, so if no one visited the website at the time of vote recopilation it wouldn't work, so that's a no no. I could make a script outside of the Django project that does this, and then run it with nohup &, but then I'd lose on the model notation and would have to make manual queries, plus I'm sure there's a better, more Django way to do this. Any solutions to this problem? Or maybe some direction you can point me in?

How to make a code that alters database in background Django

2017-11-19T04:22:00.000

python,sql,django

If your scenario is just to update the database based on the number of votes, you can straight away go for cron. Write a script that checks for the votes and changes the status of the user in the database. Schedule it in cron to run it once at the end of the day / poll. Place the script in a directory that is not reachable by outsiders. cron entry for a script to run once a day at 23:30 hrs: 30 23 * * * python /root/scripts/status_change_script.py

I'm making an elimination style voting website. People log in, vote for their least favorite participant, and at the end of the day the person with the most votes goes inactive. Almost everything works: The log in, the voting, etc. But I have no idea how to make a program that checks for the most votes and alters the database to change the status of a participant at a particular time without needing a user to enter the website. I don't even know where to put the code. And how would I make sure it's constantly running? The way I see it, views.py only works when a user goes to the URL, so if no one visited the website at the time of vote recopilation it wouldn't work, so that's a no no. I could make a script outside of the Django project that does this, and then run it with nohup &, but then I'd lose on the model notation and would have to make manual queries, plus I'm sure there's a better, more Django way to do this. Any solutions to this problem? Or maybe some direction you can point me in?

How to make a code that alters database in background Django

2017-11-20T00:55:00.000

python,python-2.7,math

I didn't need to make my integer a symbol. The code above works.

I know you can probably do a limit of a mathematical operation, say the limit of n + 1 as n approaches infinity, but can I do the limit of a function? For instances the limit of dividing to Fibonacci numbers as their index (and value) gets greater, approaching infinity? For example lim(func, start, approach) I have looked at sympy, and it is either not possible or I don't know how to pass a symbol argument as an integer. Eg: iters = Symbol("iters") print limit(main(iters),iters,0)

Do A Limit on the Output of a Function in Python

2017-11-21T16:30:00.000

bash,python-3.x,raspberry-pi,raspbian

For udisks --detach the parameter should be the device, not the mounting point. For example, if the USB Disk is /dev/sdb the command would be udisks --detach /dev/sdb If the command still doesn't work you could try udiskctl power-off -b <device> which should also work.

So I'm trying to get a working code in Python that will eject/unmount all USB flash drives attached to the Pi (Running Raspbian) - so that they can be removed safely. The final code will be run from within the python program. Additionally, I'd like to eject/unmount the USB flash drive even if it's in use. I've looked around and can't see how to do this. Thanks. udisks --detach /media/pi/DOCS/ - 'Blocked device... Resource temporarily available'... udisks --detach /media/pi/ - 'Blocked device...Resource temporarily available'... udisks --detach /media/ - 'Blocked device...Resource temporarily available'... sudo udisks --detach /media/pi/DOCS/ - still blocked... sudo umount /path/to/devicename - command not found... eject /media/pi/DOCS/ - Unable to open '/dev/sda' (DOCS is the name if my USB flash drive. - though I want to eject all USB flash drives - not just my one) So I'm going to ask the user in Python to select their USB flash drive from a list, which is pretty easy (just read in the folder) - so I will have the pathway to the USB. I'm still not sure which code can safely disconnect the USB flash drive - Maybe more research is the answer. Thanks for your help so far.

Ejecting/unmounting random USB flash drive in Raspberry pi / Python

2017-11-21T20:52:00.000

python,python-3.x,file,io

One reason shell scripts do this is that a shell variable cannot contain arbitrary binary data (namely, null bytes). Python variables have no such limitations; just store the data in a variable.

I am not sure what it is called. I have seen a installer program have stored data at the end of the installer script, looked like just a mess of random text, which then got turn into a seperate file upon running the installer. There was some comand that said something like line xxx -> end | file.txt. Im so sorry if this makes no sense but if anyone knows what I am looking for id like to do the same thing in a python script. directions to a resource or an explination on how to do it here would be great thanks.

Store a file insde python file

2017-11-23T07:04:00.000

python,flask,single-sign-on,flask-login,flask-oauthlib

So, I've spent some time thinking about this (as I want to do it for my own website), and I've come up with a theoretical solution. From what I understand in my implementation of Google's OAuth API, OAuth is about sending the user on a link to the server that hosts the OAuth keys, and then returning back to the sender. So, my idea is that in the login form, you have buttons that act as links to the OAuth client. I haven't tested this, but since no one else has replied to this I figure this will give you a nice little project to implement yourself and let us know if it works.

For now, I'm trying to use flask-oauthlib with flask-login together. flask-oauthlib provides a simple way to use oauth, but I want a login manager to automatically redirect all users who are not logged in to /login. In flask-login, I can use login_required to accomplish this. But how could I achieve this by flask-oauthlib? Further, how to manage session when using flask-oauthlib? I understand how SSO works, but I'm confusing how could I know if this token is expired or not?

How to use flask-oauthlib with flask-login together?

2017-11-23T11:06:00.000

windows,python-3.x,variables,cmd,path

OK! I figured out the issue - The python36 folder was not placed in the C: location. Now I've corrected it and it's working for me! Thanks!

I'm wondering how I could run python3 by default when I type python in windows CMD? This is not a duplicated question because I've added the C:\Python36 to the path variables, so when I type py in CMD, it gives me python 3.6.2, while if I type py2, then it gives me python 2.7.11. Since now I need to run python script.py through another application, then I can't really change the command to be py script.py, so my question is how could I run python 3 if using the command python script.py? I've tried to place the python3 preceeding python2 like C:\Python36;C:\Python27 in the variables, but when I type python, CMD still shows python 2.7.11...I'm confused about why it didn't work.. Thank you very much in advance!

How to run Python 3 when I type "python" in windows CMD

2017-11-23T11:41:00.000

django,python-3.x,postgresql,mqtt,thingsboard

ThingsBoard has APIs which you can use. You may also customise it based on your requirements.

I am using the Python3, Django and database as Postgresql, and I wanted to use the Thingsboard dashboard in my web application. can anyone pls guide me how can I use this

I am using the python django, and i wanted to know to get use thingsboard dashboard, and database as postgresql

2017-11-24T04:30:00.000

python,python-3.x,jinja2

If you mean to just iterate through the string, you can explicitly make the array in python and pass it into jinja. Try to minimise logic in jinja as much as possible.

I need to convert a string acbdefrg into an array of individual letters [a,b,c,d,e,f,r,g]. I understand how it's done in python through list(your_string). Hoever this code does not work in jinja2. Is this possible, or will I have to make the array in python and pass it over to jinja?

Split string into individual charactor array in jinja2

2017-11-24T08:56:00.000

python,open-source

in animation tab try a right click on model and under "roving type" select "response roved".

I am asking this for mgx4: I imported a .uff file containing FRF from Experimental Modal Analysis (EMA). I generated the mesh (geometry) of the tested structure with lines and triangle surfaces. I succeed to realize the analysis and extract eigen frequencies and modal damping. What I am still unable to do is to animate the geometry according to eigen shapes as a function of eigen frequencies. When I am on the tab "Measurement" on the tab menu "ANIMATION" and I put the frequency cursor on one peak of the FRF and I click on "Play", I can just see one node moving. I would like to observe all the nodes moving in order to identify the eigen shape of the mode observed. Do you please have an idea on how to do that? Thank you for your help!

Animating modes in openmodal: roving type

2017-11-26T00:07:00.000

wxpython

You probably mean TextCtrl, don't you? You can use a validator, there is an example in the wxPython demo, which is a part of the Docs and Demo package.

I have an issue with StaticText, and I do not know how to make it accept only the following data = '0123456789.' . Of course, when you type any letter, the letter is automatically deleted. Can you help me please

wxpython make StaticText limit

2017-11-26T10:48:00.000

python,tkinter,size,pixels

Ok, I figured it out. We must call widget.update() first before calling widget.winfo_height().

If I define for example tkinter.Button widget with parameters (width=10, height=1)(in characters) and then I want to retrieve it's size in pixels, how do I do it? EDIT: I tried widget.winfo_height() and widget.geometry(), but all these functions return height defined in number of characters. I think it would be possible to create the same widget in a frame and then write frame.winfo_height() which would return size in pixels, but this is not so elegant solution.

Get tkinter widget size in pixels

2017-11-27T11:34:00.000

android,python,kivy,android-permissions,pyjnius

i know this answer is a little late, but to get permissions you have to specify them before the build. E.g buildozer uses a buildozer.spec. In this file you can specify the permissions you need.

I found that kivy is very nice framework to build cross platform application and I am very interested in kivy just to do android application as I think is easy and comfortable in kivy. After trying few examples, I am interested to know how should handle android run time permission for the kivy app. Actually I had searched on google, but no single working example out there. Should I go back to android / java or it possible with kivy and some other python libs.

How to handle android runtime permission with kivy

2017-11-27T11:34:00.000

android,python,kivy,android-permissions,pyjnius

python-for-android doesn't have any code for handling runtime permissions. I expect to look at it sooner rather than later, but there's no ETA for it. You can probably add the code for it yourself if you're interested and know how. If you'd like to try it, such contributions would be very welcome.

I found that kivy is very nice framework to build cross platform application and I am very interested in kivy just to do android application as I think is easy and comfortable in kivy. After trying few examples, I am interested to know how should handle android run time permission for the kivy app. Actually I had searched on google, but no single working example out there. Should I go back to android / java or it possible with kivy and some other python libs.

How to handle android runtime permission with kivy

2017-11-27T13:53:00.000

python,python-3.x,python-2.7,pycharm

Go to File > Settings > Project > Project Interpreter (it should take you there automatically as soon as you open Settings) and select the version you want to use from the drop-menu. If it is not there, try restarting PyCharm (if it was active whilst the Python 3 installation) - else, it probably means you didn't install Python 3 properly.

I'm a complete newbie trying to use pycharm with python but my interpretor shows a version of 2.7 when i have installed 3.6. Totally confused and need help! On pycharm I do the following steps: Preferences > Python Console > Python Interpretor I only see Python 2.7.8 (/Library/Framework/....) and beneath this I see options beginning with (/Library/Framework.... ) <-- some of these end in bin/python3.6 I am not sure how to configure Pycharm to use the new version of Python. Being a complete newbie I am really confused as to what to do? and whether changing this makes any difference. Any help would be much appreciated. Thanks!

Pycharm shows interpretor version of 2.7 but I have downloaded 3.6?

2017-11-28T06:36:00.000

python,session,flask,flask-login

One way for ensuring this would be by generating a session id from server. You would need to generate a unique session id every time a user logs in and store it in some database against that user. Apart from this you would need to authenticate user every time an endpoint call, which requires user to be logged in, is made. And of course discard the session id on logout. This way whenever a user logs in the old session id is discarded and the previous session no more remains valid.

how to make ensure one active session per one user using python flask? Description: if one user logged in two different machines with same credentials I want mechanism to force logout earlier active sessions of that user with flask and python. Please help me out in this. I am currently using flask-login, load_user() and login_manager libraries for login mechanism.

how to make ensure one active session per one user using python flask?

2017-11-28T11:22:00.000

python-pptx

The hierarchy governing the inheritance of font style is knowledge that belongs to the ill-documented black arts of PowerPoint. I don't know of a place where it's clearly described. If I needed to learn it, I would start with a Google search on "powerpoint style hierarchy" to gather candidate participants and then settle in for a long period of experimentation. The candidates I can think of are, roughly in order of precedence: formatting directly applied at the run level default run formatting applied at the paragraph level (this doesn't always take effect) formatting inherited from a placeholder, if the shape was originally a placeholder. A theme related to the slide, its slide layout, or its slide master. A table style Presentation-default formatting. I would devote a generous period to getting anything I could from Google, form a set of hypotheses, then set up experiments to prove or disprove those hypotheses. Note the challenge is made more complex by the conditions involved, such as "is in a table" and "is a placeholder", etc.

[text element].font.size returns None if the element has inherited its size from a parent text style. The documentation refers to a style hierarchy but doesn't appear to include documentation about it. Does anyone know how you traverse this hierarchy to determine the actual size of a font element if it has inherited its size from somewhere else?

python-pptx font size from hierarchy / template / master

2017-11-28T15:36:00.000

python,html,json,node.js,firebase-realtime-database

You have to create some sort of communication channel between the javascript and python code. This could be anything, SOAP, HTTP, RPC, any number of and flavor of message queue. If nothing like that is in place, it's quite the long way around. A complex application might warrant you doing this, think micro services communicating across some sort of service bus. It's a sound strategy and perhaps that's why your client is asking for it. You already have Firebase, though! Firebase is a real-time database that already has many of the characteristics of a queue. The simplest and most idiomatic thing to do would be to let the python code be notified of changes by Firebase: Firebase as service bus is a nice strategy too!

I have JS running and essentially getting user entries from my HTML session storage and pushing these to a DB. I also need to use a HTTP request to pass a json object containing the entries to a python file hosted somewhere else. Does anyone have any idea of documentation I could look at, or perhaps how to get JSON objects from JS to Python. My client does not want me to grab the variables directly from the DB.

How do you pass variables using a HTTP post from a JS file/function to a separate python file/function hosted somewhere else?

2017-11-30T11:54:00.000

python,python-3.x,python-requests,zip

Is there a way to avoid downloading the zips and directly accessing the files inside? Generally speaking : no. A web server serves files in a file system, not in a zip archive. If I do need to download them, how can I track where the zips have been downloaded to? (So I can extract the .xlsx) If not specified, the location is the current directory, the one the script has been launched in.

I have an HTML web page with many download links in a table. I have isolated the path to my desired zips. They all contain an .xlsx file but sometimes other files. Is there a way to avoid downloading the zips and directly accessing the files inside? If I do need to download them, how can I track where the zips have been downloaded to? (So I can extract the .xlsx) I am currently looking into zipfile and requests for solutions. zipfile.extract needs the path of the zip file, but I don't know exactly where the script will download to. requests gives a response object, but how do I prompt it to download?

unzipping an html link with python

2017-12-01T02:13:00.000

python,opencv,heroku,cascade-classifier

I figured it out. All I needed to do was use the os.path.abspath() method to convert the relative path to an absolute path

I am loading a cascade classifier from a file in OpenCV using python. Since the CascadeClassifier() method requires the filename to be the absolute filename, I have to load the absolute filename. However, I am deploying and using it on Heroku and I can't seem to get the absolute path of the file. I've tried using os.getcwd() + '\cascader_file.xml', but that still does not work. I would like to know how to load the classifier on the Heroku deployment

Load classifier on Heroku Python

2017-12-01T09:43:00.000

python,debugging,pycharm,pytest

A few things that might help you with debugging speed are: using Python 3.5/3.6. If you're running in linux/macos install the cython extension (you get prompted) Use the latest Pycharm, 2017.3 at this moment. Try to simplify tests. If not possible, just run those you need for the debugging process by creating a special runner in Pycharm and using the -k 'pattern' argument for pytest. Moreover, I don't understand why you're invoking pdb if you're using the Pycharm debugger.

I have a series of tests that are quite complicated. Unfortunately, the builtin Pycharm Debugger is waaay too slow to handle them. I tried making it faster, but any attempts failed, so I have to resort to using pdb. My problem is that the command line that appears if I run my tests with pycharm and come across a pdb breakpoint is quite annoying: It does not support code completion (of course I googled it, but my attempts failed). I can't even press 'up' to get the last command again Most annoyingly: When I already wrote some code in the command line and jump to the beginning of the line to edit it, the cursor automatically jumps to the end of the line. I noticed that it is not the iPython console which I get when I go into pdb debug mode when I don't use pytest. Do you have any idea on how to solve any of these issues? Ideally on how to speed up the Pycharm debugger, or how to get the iPython console also in pytest? Help is much appreciated. Thanks in advance.

Debugging pytests in Pycharm with pdb shows annoying console

2017-12-01T22:07:00.000

python,visual-studio,terminal

At the bottom of the MS Code screen is an info bar that lets you know what line, col, text encoding, etc... It also shows the python interpreter you are accessing. If you click on the text for the version of python that is running, it will open a list of available interpreters on your system. If 2.7 is in your path, you can select it.

I have installed on my system several Python interpreters, 2.x and 3.x versions. I am trying to prepare my work environment to allow easily switch between code written in both Python version. It is really important to have as much flexible setting in Visual Studio Code (VSC). The problem is that I have no idea how to set VSC terminal to run code in Python 2.x. Terminal output is needed because it allows to provide user input easily. I've tried instructions provided on VSC page, like manual interpreter's path indication in folder or workspace setting. I reinstalled Python 2.x to ensure PATH variable has been updated. When I run code with CodeRunner extension, it always run it in Python 3.x. Does anyone have similar issue and found how to change Python environment used by this integrated terminal?

How to change interpreter in Visual Studio Code?

2017-12-02T04:44:00.000

python,pygame

In order to have the box removed you need to call a ~destructor function on it, which would remove the image of the box and so on correct? Take advantage of that and create a function that chooses which item to spawn (could be random, up to you) in the position where the box used to be. Then call this function at the end of the destructor. That's how imagine it working.

I'm making a game using Pygame where there are random obstacles on the screen (like boxes). The boxes can be removed by the player when they place a bomb next to it. I have some items that I would like to have randomly appear in place of the box if it is removed. I'm not sure how to go about this logically. Does anyone have any tips? No code is necessary (but helpful), I just want some steps logic-wise to get me started.

Making items appear from obstacles in game?

2017-12-02T08:53:00.000

python-3.x,tensorflow,darkflow

Problem solved. Changing batch size and image size in config file didn't seem to help as they didn't load correctly. I had to go to defaults.py file and change them up there to lower, to make it possible for my GPU to calculate the steps.

I've used YOLO detection with trained model using my GPU - Nvidia 1060 3Gb, and everything worked fine. Now I am trying to generate my own model, with param --gpu 1.0. Tensorflow can see my gpu, as I can read at start those communicates: "name: GeForce GTX 1060 major: 6 minor: 1 memoryClockRate(GHz): 1.6705" "totalMemory: 3.00GiB freeMemory: 2.43GiB" Anyway, later on, when program loads data, and is trying to start learning i got following error: "failed to allocate 832.51M (872952320 bytes) from device: CUDA_ERROR_OUT_OF_MEMORY" I've checked if it tries to use my other gpu (Intel 630) , but it doesn't. As i run the train process without "--gpu" mode option, it works fine, but slowly. ( I've tried also --gpu 0.8, 0.4 ect.) Any idea how to fix it?

YOLO - tensorflow works on cpu but not on gpu

2017-12-02T08:53:00.000

python-3.x,tensorflow,darkflow

Look like your custom model use to much memory and the graphic card cannot support it. You only need to use the --batch option to control the size of memory.

I've used YOLO detection with trained model using my GPU - Nvidia 1060 3Gb, and everything worked fine. Now I am trying to generate my own model, with param --gpu 1.0. Tensorflow can see my gpu, as I can read at start those communicates: "name: GeForce GTX 1060 major: 6 minor: 1 memoryClockRate(GHz): 1.6705" "totalMemory: 3.00GiB freeMemory: 2.43GiB" Anyway, later on, when program loads data, and is trying to start learning i got following error: "failed to allocate 832.51M (872952320 bytes) from device: CUDA_ERROR_OUT_OF_MEMORY" I've checked if it tries to use my other gpu (Intel 630) , but it doesn't. As i run the train process without "--gpu" mode option, it works fine, but slowly. ( I've tried also --gpu 0.8, 0.4 ect.) Any idea how to fix it?

YOLO - tensorflow works on cpu but not on gpu

2017-12-03T17:40:00.000

python,django,django-models

There's a simple difference. Model methods act on a single instance. Manager methods create queries to act on multiple instances.

when should I write methods in the model itself and when in the model manager? is it like all methods to get something should be written in manager and others in model

when should I write custom methods in model vs model manager/ queryset

2017-12-04T10:32:00.000

python,view,dns,bind,dnspython

Finally, this problem has been solved by changing the match-clients dynamically through ssh and then rndc reload. This make the remote server only access to the specific view in which you want to update the zone using dnspython.

Just like the title. I was struggling to work with that, but I couldn't find any way to make that work. Is there anyone know how to do that. Please help, thanks!

Is there any way to update zone in specific views using dnspython?

2017-12-05T15:03:00.000

python,email,organizer,exchangelib

The meeting organizer is available on CalendarItem objects as item.organizer.

I'm currently using the exchangelib library in python. I would like to compare the mail of the account connected to exchangelib and the mail of a meeting organizer. I can have the account mail by typing "account.primary_smtp_address" but I don't know how I could get the meeting organizer mail. For now i can only get the organizer's name by typing "item.subject" where "item" is my meeting. Conversely, is it possible to get the account's name (the complete name: "Michael JORDAN" for example) which I could compare with the meeting organizer's name. Thank you !

Exchangelib - Get meeting organizer mail

2017-12-06T00:45:00.000

python,configuration,visual-studio-code

Open launch.json (gear icon when on debugger tab). Find the section for the python debugger you are using. Change "stopOnEntry" from true to false. Save.

When I open a python file without a workspace and start debugging it, the debugger breaks on the first line. I would like to change this behaviour, but I don't know how to do it for files that are opened without a workspace.

How to disable stopOnEntry for files that are opened without a workspace?

2017-12-06T09:37:00.000

python,project,executable,pyinstaller

1) Open the command prompt 2) Install pyinstaller Pip install pyinstaller 3) Test your python script first just to check python script should work with normal .py extension. Saurabh is the name of python file python saurabh.py 4) Convert the python into executable file pyinstaller --onefile Saurabh.py Notice we have passed “–onefile” as a argument which tell pyinstaller to create only one file 5) Go to directory and navigate to the dist folder. Prerequisite : Install PyQt5 to avoid error. pip install PyQt5

I have a Python project that I want to convert into an executable. I have installed Pyinstaller. I only know how to convert one single script into .exe, but I have multiple packages with multiple python scripts.

How to convert Python project into executable

2017-12-06T09:37:00.000

python,project,executable,pyinstaller

Converting the main script into .exe should solve the problem, use -onefile to convert it to one exe and rest of the .py files should be included.

I have a Python project that I want to convert into an executable. I have installed Pyinstaller. I only know how to convert one single script into .exe, but I have multiple packages with multiple python scripts.

How to convert Python project into executable

2017-12-08T07:09:00.000

html,linux,python-3.x,web,terminal

A quick solution I would do (without any libraries or stuff): invoke your CLI program and set it up to continuously output to a file on the server. Make sure you know the file name. use Ajax calls to fetch the output to the client. OR (if you are in for hard stuff) use a webSocket to output to the client.

I am trying to create a web application using python which has a HTML form and the form data is used as a command line input to start an application. I know how to initiate the CLI tool from web app, but want a way to get the output of the CLI tool from Linux terminal real time and show it in the web application. The CLI tool will run for a day and the terminal output will change in real time. Is there a way to display the changing Linux terminal output in to the web application. Information about any web terminal or way to get and store the real-time screen output of a linux application will be helpful. When ever the screen O/P of the application running in linux changes then the web application should also be updated with the change. Any python lib or tools will be useful and easy to Integrate?

Getting a Linux terminal output of a CLI tool and displaying in Web page

2017-12-08T07:30:00.000

python,regex

You could just capture all Chinese characters between quotes, capture any comment start ´--´ indicators, and then throw away all the matches after that indicator.

I want to match any Chinese character in ""， but not in the comment of Lua, i.e: after --. For example, in string Tips("中文") -- "注释"，中文 should be matched, but not 注释. The regex I write is ur'(?<!--.*?)"([\u4e00-\u9fff]+)"'，but Python gives an error: look-behind requires fixed-width pattern. So how to fix this?

Regex in Python. How to match a string but not in comments?

2017-12-08T18:23:00.000

php,python,linux,webserver,file-permissions

As suggested by @wpercy you have figure out which user is executing the file. Usually that user is called www-data ! To find out which user is calling the service use ps aux | grep -E '[a]pache|[h]ttpd|[_]www|[w]ww-data|[n]ginx' | grep -v root | head -1 | cut -d\ -f1 After you figured out the user you have to change the permission for the folder. That command schould be something like chown -R www-data:www-data /var/www/html/Projectfolder Special thanks to wpercy!

I'm currently working on a project, which will dynamically fetch some informations of my job and display them in a html page. To accomplish this i wrote a python script, which will be invoked using a PHP webservice. The script needs to edit some files in order to work. Basically PHP executes the script using $output = shell_exec('python script.py'); The problem is, that if the webservice is called, the script does not have the needed permissions to edit the files. So the webserver should call the script using something like $output = shell_exec('sudo python script.py'); I may need to change the permissions to the project folder but i don't know how. Some additional informations: I'm using a raspberry pi 3 with LAMP installation on raspian as webserver The folder structure is the following: projectfolder | - style (containing css) -script.py -script2.py -filetoedit1.txt -filetoedit2.html Any help is appreciated!

Linux editing privilege over webservice

2017-12-11T10:43:00.000

python,macos,terminal

Just type python3 where you would have typed python. For example open repl type python3 run app.py program with python3.6 type python3 app.py

When I run python someCode.py in my terminal, I am actually using python 2.7 I have installed python 3.6 on my Mac and would like to use it in terminal. how can I do that?

How do I use python 3 on terminal Mac

2017-12-11T10:43:00.000

python,macos,terminal

type python3 on command window/ terminal window & press enter for exit from python type quit() & press enter

When I run python someCode.py in my terminal, I am actually using python 2.7 I have installed python 3.6 on my Mac and would like to use it in terminal. how can I do that?

How do I use python 3 on terminal Mac

2017-12-11T17:00:00.000

python,jupyter

Grammarly was the cause of this. If you use jupyter notebooks and have the grammarly extension. It will cause problems.

I don't know how this happens or why, but I'll be in a jupyter notebook grouping by things and I will very conciously type in dataframe.groupby, write some other code and hit ctrl+ enter and there will be that damn error. Every single time, I will go back and delete the 'groupyouby' and type in groupby. I doubt that anyone has run into this error,and I don't know how long it will be until someone else creates the mess of libraries that I have that resulted in this chinese water tourture like nightmare. I am here, to let you know, that you are not alone. Also if someone has a fix that would be great. I got nothing for you other than that description above.

Jupyternotebook corrects groupby to groupyouby Python

2017-12-11T17:36:00.000

python,automated-tests,aws-lambda

When it comes to unit testing, there's nothing special you have to do about AWS Lambda projects. You Lambda handler is a Python function. Therefore, you can import it on your tests, call it with some input, and assert the output. Just like a normal Python function.

I have implemented a lambda project which has 4 modules/project inside it. Each module/project has python(s) files which implement module functionality. I have to write the test cases for each module so that it goes through CircleCI and execute on themselves: That the module is starting and stopping a stepfunction. module is calling Rest service. It is writing/reading files from S3 Bucket. Everywhere, it is like a test driven development to write unit test, but now I have completed project implementation, how do I write automated test cases for my module ?

How do I write test cases for my AWS Python-based lambda project?

2017-12-12T03:19:00.000

python,shell,cron,scheduled-tasks,aix

One way I can think of is to write a daemon (another script perhaps) and keep checking the file for changes. It is possible to write a script with infinite loop and the loop can contain the file check logic.

I am trying to monitor a file and if there is a change file I need to execute a script but the catch is cron job is not allowed, also this will be executed on AIX system. Can somebody help me here on how to proceed.Thank You

how to monitor changes in file without cron job in AIX

2017-12-12T13:39:00.000

java,python,grails,jenkins

Just dir no ${workspace} bat 'dir' in a pipeline script. Select a "execute batch command" option and write the commands you want to execute in there. Then check the console output of the build which was successful.

I have created a workspace and clone all files in to that. Now, I'm running my code through jenkins. Can anyone assist how to display all the files in my workspace through any command. I tried with ${workspace} dir in Jenkins but it is showing any output. Basically, if you are at any folder in your system and you open cmd and exceute dir in windows, it will display all the files in it. The same thing I want to see in Jenkins for windows. Thanks.

Jenkins command to display all file in directory?

2017-12-13T07:11:00.000

python,pycharm

On pycharm go to File > Settings > project interpreter.. Under this add your env as an interpreter.

I tried import apiai on pycharm, but it didn't work so I ran pip install apiai then freezed to the requirements.txt it still didn't work on pycharm. I went and tested my code in the prompt after i ran it in the env environment and it worked just fine. My question is how can i make it work on pycharm too ?

I am unable to import apiai on pycharm?

2017-12-13T13:37:00.000

python,opencv,graphics,computer-vision

If the camera motion is approximately a rotation about its optical center / lens entrance pupil (for example, pan-tilt-roll on a tripod with the subject distance much larger than the translation of the optical center), then images taken from rotated viewpoints are related by a homography. If you know the 3D rotation (pan/tilt/roll), then you can explicitly compute the homography and apply it to the image. If not, but you have two images upon which you can identify 4 corresponding points or more, then you can estimate the homography directly from those correspondences.

I am performing some perspective transforms on camera images, however in certain cases the roll and pitch of the camera are not zero. In other words, the camera is not level and I would like to be able to correct for this. I have some questions: 1) Can the transformation matrix (from M = cv2.getPerspectiveTransform(...) ) be corrected for the pitch and roll angles? 2) Should I just transform the source points and get a new transformation matrix? Roll seems like a simple enough correction since it's analogous to rotating the image, but how can I get the proper transformation for both roll and pitch?

OpenCV perspective transform with camera roll and pitch correction

2017-12-13T15:50:00.000

python,wlst

This command will print the Python version used by WLST : print (sys.version)

In Weblogic how to find WLST python version. Its known that WLST is made up by python. And Python 2 and Python 3 is different from one another Architecture wise and bit wise. Python 2 available for 64 bit considering Windows OS. Python 3 is still 32-bit as far I know. Python is well known simplest Higher Level Language that is widely used in many Industry, but classified like version 2 and 3. When I work in WLST I wonder what would be the Python version it is made up of. When Weblogic version differs does it differ. However it so, how to find out, is there a specific command or function for it while operating in WLST shell

How to find WLST python version

2017-12-13T19:29:00.000

python,powershell,command-line,anaconda,conda

Here is a work around - start cmd shell . Run - activate . Check - conda env list . Start powershell - powershell .

I have two environments in anaconda, namely: root, 2env. When I open anaconda prompt, I can switch from root to 2env by typing: activate 2env. I also have conda in my powershell, but when I open powershell and try to run conda activate 2env it gives the following error: CommandNotFoundError: 'activate' Any suggestions on how to fix this?

How to activate different anaconda environment from powershell

2017-12-13T19:29:00.000

python,powershell,command-line,anaconda,conda

I found this command while using vs code & cmd /k "activate <env> & powershell" . It is working

I have two environments in anaconda, namely: root, 2env. When I open anaconda prompt, I can switch from root to 2env by typing: activate 2env. I also have conda in my powershell, but when I open powershell and try to run conda activate 2env it gives the following error: CommandNotFoundError: 'activate' Any suggestions on how to fix this?

How to activate different anaconda environment from powershell

2017-12-13T19:29:00.000

python,powershell,command-line,anaconda,conda

I have been battling this issue for a while. I found a solution by using a batch script and calling call activate %env%. I hope this can help somebody.

I have two environments in anaconda, namely: root, 2env. When I open anaconda prompt, I can switch from root to 2env by typing: activate 2env. I also have conda in my powershell, but when I open powershell and try to run conda activate 2env it gives the following error: CommandNotFoundError: 'activate' Any suggestions on how to fix this?

How to activate different anaconda environment from powershell

2017-12-13T19:29:00.000

python,powershell,command-line,anaconda,conda

Open PowerShell. Run conda init (not conda init powershell as the accepted answer suggests). Close and re-open PowerShell. Use conda normally.

I have two environments in anaconda, namely: root, 2env. When I open anaconda prompt, I can switch from root to 2env by typing: activate 2env. I also have conda in my powershell, but when I open powershell and try to run conda activate 2env it gives the following error: CommandNotFoundError: 'activate' Any suggestions on how to fix this?

How to activate different anaconda environment from powershell

2017-12-15T06:44:00.000

python-3.x,nlp,gensim,text-analysis

I have worked on similar lines. This approach can work till 300 such documents. But, taking it to higher scale you need to replicate the approach using spark. Here it goes: 1) Prepare TF-IDF matrix: Represent documents in terms Term Vectors. Why not LDA because you need to supply number of themes first which you don't know first. You can use other methods of representing documents if want to be more sophisticated (better than semantics) try word2Vec, GloVe, Google News Vectors etc. 2) Prepare a Latent Semantic Space from the above TF-IDF. Creation of LSA uses SVD approach (one can choose the kaiser criteria to choose the number of dimensions). Why we do 2)? a) TF-IDF is very sparse. Step 3 (tSne) which is computationally expensive. b) This LSA can be used to create a semantic search engine You can bypass 2) when your TF-IDF size is very small but i don't think given your situation that would be the case and also, you don't have other needs like having semantic search on these documents. 3) Use tSne (t-stochastic nearest embedding) to represent the documents in 3 dimensions. Prepare a spherical plot from the euclidean cordinates. 4) Apply K-means iteratively to find the optimal number of clusters. Once decided. Prepare word clouds for each categories. Have your themes.

I am trying to do textual analysis on a bunch (about 140 ) of textual documents. Each document, after preprocessing and removing unnecessary words and stopwords, has about 7000 sentences (as determined by nlkt's sentence tokenizer) and each sentence has about 17 words on average. My job is to find hidden themes in those documents. I have thought about doing topic modeling. However, I cannot decide if the data I have is enough to obtain meaningful results via LDA or is there anything else that I can do. Also, how do I divide the texts into different documents? Is 140 documents (each with roughly 7000 x 17 words) enough ? or should I consider each sentence as a document. But then each document will have only 17 words on average; much like tweets. Any suggestions would be helpful. Thanks in advance.

Suggestion on LDA

2017-12-15T12:44:00.000

python,selenium,selenium-webdriver

Reliably determining whether a page has been fully loaded can be challenging. There is no way to know if all the elements have been loaded just like that. You must define some "anchor" points in each page so that as far as you aware, if these elements has been loaded, it is fair to assume the whole page has been loaded. Usually this involves a combination of tests. So for example, you can define that if the below combination of tests passes, the page is considered loaded: JavaScript document.readyState === 'complete' "Anchor" elements All kinds of "spinners", if exist, disappeared.

I am asking for generally checking if all elements of a page has been loaded. Is there a way to check that basically? In the concrete example there is a page, I click on some button, and then I have to wait until I click on the 'next' button. However, this 'Next' button is available, selectable and clickable ALL THE TIME. So how to check with selenium that 'state'(?) of a page? As a reminder: This is a question about selenium and not the quality of the webpage in question....

Is there a way with python-selenium to wait until all elements of a page has loaded?

2017-12-16T00:14:00.000

python,turtle-graphics,python-turtle

You can use: turtle.right(angle) or: turtle.left(angle). Hope this helps!

How can I tell a turtle to face a direction in turtle graphics? I would like the turtle to turn and face a direction no matter its original position, how can I achieve this?

Turtle direction in turtle graphics?

2017-12-18T07:11:00.000

python,pyinstaller

Do not mention the pickle file to pyinstaller and put the pickle file in the same folder than the bundled onefile. For me this works even if you have two files in the folder instead of one.

I'm making onefile executables with pyinstaller on windows 10. I'm including data files (pickle files) by editing the .spec file... How can I store changes made to these files during run time? My understanding is that the data files are copied to a temp directory during execution. I can read from the files using the path I get from sys._MEIPASS but the changes I write are lost after restarting the program. Is there a way to write to pickle files stored inside the exe?

how to change bundled data file pyinstaller on execute

2017-12-19T01:11:00.000

python-3.x,sms,sms-gateway,messagebird

Messagebird have a feature of forward incoming sms data through webhook(get or post method). if you set an url then Messagebird will forward every incoming sms to you(or your server). You can easily read get/post response.

I am evaluating MessageBird service. I got a Virtual Mobile Number. I am able to send message to dummy numbers (until i get approval for sending messages to real USA number) Unknown: My problem is about reading the messages received by a VMN. Details: If I as a VMN owner send a message to consumer e.g. +1(111)111-1111 and i am interested in reading the response from the consumer, how to do get it? MessageBird documentation expects me to know the ID for response message object (or my understanding is wrong). The documentation is good but i don't see a way to programmatically achieve it. Any suggestions How to achieve it? Thanks in advance!

MessageBird: How to read a response from consumer

2017-12-20T22:01:00.000

python,anaconda

I added "\Anaconda3_64\" and "\Anaconda3_64\Scripts\" to the PATH variable. Then I can use conda from powershell or command prompt.

I had to install the 64-bit version of Anaconda with python 3.5 in Windows 10. I followed the default settings (AppData/Continuum/Anaconda3). However, after installation, I am unsure how to access the Anaconda command prompt so that I can use conda to install packages. I also attempted to install Anaconda 64 bit in C:/Program Files, but several of the python script did not like the space and it failed to install. What can I do to access the Anaconda prompt?

How to access Anaconda command prompt in Windows 10 (64-bit)

2017-12-20T22:01:00.000

python,anaconda

Go with the mouse to the Windows Icon (lower left) and start typing "Anaconda". There should show up some matching entries. Select "Anaconda Prompt". A new command window, named "Anaconda Prompt" will open. Now, you can work from there with Python, conda and other tools.

I had to install the 64-bit version of Anaconda with python 3.5 in Windows 10. I followed the default settings (AppData/Continuum/Anaconda3). However, after installation, I am unsure how to access the Anaconda command prompt so that I can use conda to install packages. I also attempted to install Anaconda 64 bit in C:/Program Files, but several of the python script did not like the space and it failed to install. What can I do to access the Anaconda prompt?

How to access Anaconda command prompt in Windows 10 (64-bit)

2017-12-20T22:01:00.000

python,anaconda

If Anaconda Prompt is missing, you can create it by creating a shortcut file of Command Prompt (cmd.exe) and change its target to: %windir%\System32\cmd.exe "/K" <Anaconda Location>\anaconda3\Scripts\activate.bat Example: %windir%\system32\cmd.exe "/K" C:\Users\user_1\AppData\Local\Continuum\anaconda3\Scripts\activate.bat

I had to install the 64-bit version of Anaconda with python 3.5 in Windows 10. I followed the default settings (AppData/Continuum/Anaconda3). However, after installation, I am unsure how to access the Anaconda command prompt so that I can use conda to install packages. I also attempted to install Anaconda 64 bit in C:/Program Files, but several of the python script did not like the space and it failed to install. What can I do to access the Anaconda prompt?

How to access Anaconda command prompt in Windows 10 (64-bit)

2017-12-20T22:01:00.000

python,anaconda

To run Anaconda Prompt using an icon, I made an icon and put: %windir%\System32\cmd.exe "/K" C:\ProgramData\Anaconda3\Scripts\activate.bat C:\ProgramData\Anaconda3 (The file location would be different in each computer.) at icon -> right click -> Property -> Shortcut -> Target I see %HOMEPATH% at icon -> right click -> Property -> Start in Test environment    OS: Windows 10    Library: Anaconda 10 (64 bit)

I had to install the 64-bit version of Anaconda with python 3.5 in Windows 10. I followed the default settings (AppData/Continuum/Anaconda3). However, after installation, I am unsure how to access the Anaconda command prompt so that I can use conda to install packages. I also attempted to install Anaconda 64 bit in C:/Program Files, but several of the python script did not like the space and it failed to install. What can I do to access the Anaconda prompt?

How to access Anaconda command prompt in Windows 10 (64-bit)

2017-12-21T13:06:00.000

python,rabbitmq

The best way to consume the messages is using basic_consume. basic_get is slow

I'm writing Python script cron-job, which is periodically get updates from RabbitMQ and process them. Every time I process them I need only to get current snapshot of RMQ queue. I use queue_declare to get number of messages in it. I know how to get messages one by one with basic_get. Also, I can use basic_consume/start_consuming and get messages in background, store them in some list and periodically get from that list, but what if script will fail with some error? I will lost all read messages in list. Also, I can use few consumers (pool of connections to RMQ) and get messages one by one. Maybe there is some other approach to do it? So, my question is - what is the best (i.e. secure and fast) way to get current messages from RabbiMQ queue?

The best way to read a lot of messages from RabbitMQ queue?

2017-12-21T21:08:00.000

python-3.x,pycharm

I ran into this issue when trying to get docker up and running with Pycharm 2018.1 and using the container's Interpreter. I would get the error below. "Cannot Save Settings please use a different SDK name" The issue I had was due to having multiple python interpreters of the same name. Under Pycharm || Preferences || Project Interpreter Click "show all" within the Project Interpreter dropdown and then delete any / all interpreters that you don't need.

I have been using Pycharm for years and have never had any problem. However, after my most recent PyCharm update I can no longer configure the interpreter. Also each time I create a new project it creates a vent directory under my project. When I go to File/Default Settings/Project Interpreter, I am provided with new options. In this window it allows you to configure a virtual environment, the conda environment, and the system interpreter. I am assuming that I should configure the system interpreter. From there I point PyCharm to the interpreter on my Mac at /usr/local/Cellar/python3/3.6.3/bin/python3 and hit OK. It then takes me back to the main window where it shows the path in the project interpreter. At this point I hit apply and get a message: Cannot Save Settings please use a different SDK name It doesn't matter which interpreter I choose, I get the same message. Has anyone else come up with the same problem and how do I fix this? Interestingly my old projects still work correctly.

Configuring interpreter in PyCharm: "please use a different SDK name"

2017-12-21T21:08:00.000

python-3.x,pycharm

I had the same problem while setting up the virtual environment for my project and no matter if I create a new virtual environment or select an existing one, I get the warning: "Cannot Save Settings please use a different SDK name" Finally I found the solution: Click on the project interpreter dropdown and select show all.... There you might be having multiple virtual environments with same name. Now here is the conflict you need to fix manually by renaming them so every item has the unique name.

I have been using Pycharm for years and have never had any problem. However, after my most recent PyCharm update I can no longer configure the interpreter. Also each time I create a new project it creates a vent directory under my project. When I go to File/Default Settings/Project Interpreter, I am provided with new options. In this window it allows you to configure a virtual environment, the conda environment, and the system interpreter. I am assuming that I should configure the system interpreter. From there I point PyCharm to the interpreter on my Mac at /usr/local/Cellar/python3/3.6.3/bin/python3 and hit OK. It then takes me back to the main window where it shows the path in the project interpreter. At this point I hit apply and get a message: Cannot Save Settings please use a different SDK name It doesn't matter which interpreter I choose, I get the same message. Has anyone else come up with the same problem and how do I fix this? Interestingly my old projects still work correctly.

Configuring interpreter in PyCharm: "please use a different SDK name"

2017-12-21T21:08:00.000

python-3.x,pycharm

Go to Project > Project Interpreter > Select the dropdown menu > "Show All". For me, there were several Python environments, two of which were red with an tag. Remove the envs that are red / have an tag, select the remaining valid one, and re-apply settings.

I have been using Pycharm for years and have never had any problem. However, after my most recent PyCharm update I can no longer configure the interpreter. Also each time I create a new project it creates a vent directory under my project. When I go to File/Default Settings/Project Interpreter, I am provided with new options. In this window it allows you to configure a virtual environment, the conda environment, and the system interpreter. I am assuming that I should configure the system interpreter. From there I point PyCharm to the interpreter on my Mac at /usr/local/Cellar/python3/3.6.3/bin/python3 and hit OK. It then takes me back to the main window where it shows the path in the project interpreter. At this point I hit apply and get a message: Cannot Save Settings please use a different SDK name It doesn't matter which interpreter I choose, I get the same message. Has anyone else come up with the same problem and how do I fix this? Interestingly my old projects still work correctly.

Configuring interpreter in PyCharm: "please use a different SDK name"

2017-12-21T21:08:00.000

python-3.x,pycharm

How fix this in Windows 10: close Pycharm . delete this file: C:\Users\<username>\.PyCharmCE2018.3\config\options\jdk.table.xml open Pycahrm again and load all python interceptors again.

I have been using Pycharm for years and have never had any problem. However, after my most recent PyCharm update I can no longer configure the interpreter. Also each time I create a new project it creates a vent directory under my project. When I go to File/Default Settings/Project Interpreter, I am provided with new options. In this window it allows you to configure a virtual environment, the conda environment, and the system interpreter. I am assuming that I should configure the system interpreter. From there I point PyCharm to the interpreter on my Mac at /usr/local/Cellar/python3/3.6.3/bin/python3 and hit OK. It then takes me back to the main window where it shows the path in the project interpreter. At this point I hit apply and get a message: Cannot Save Settings please use a different SDK name It doesn't matter which interpreter I choose, I get the same message. Has anyone else come up with the same problem and how do I fix this? Interestingly my old projects still work correctly.

Configuring interpreter in PyCharm: "please use a different SDK name"

2017-12-21T21:08:00.000

python-3.x,pycharm

In my case, I moved my project to a different location and PyCharm started complaining about Cannot Save Settings please use a different SDK name. At the top of the main editor, it asks me to Configure Project Interpreter. I clicked it, and then ... My solution Remove all existing interpreters that are marked as invalid in the preference. Select the interpreter in the moved venv subfolder in my project. Without doing both, I kept getting the same "SDK name" error. It seemed that the project thinks that it already has an interpreter called "python.exe", if you don't actively remove all "invalid" ones.

I have been using Pycharm for years and have never had any problem. However, after my most recent PyCharm update I can no longer configure the interpreter. Also each time I create a new project it creates a vent directory under my project. When I go to File/Default Settings/Project Interpreter, I am provided with new options. In this window it allows you to configure a virtual environment, the conda environment, and the system interpreter. I am assuming that I should configure the system interpreter. From there I point PyCharm to the interpreter on my Mac at /usr/local/Cellar/python3/3.6.3/bin/python3 and hit OK. It then takes me back to the main window where it shows the path in the project interpreter. At this point I hit apply and get a message: Cannot Save Settings please use a different SDK name It doesn't matter which interpreter I choose, I get the same message. Has anyone else come up with the same problem and how do I fix this? Interestingly my old projects still work correctly.

Configuring interpreter in PyCharm: "please use a different SDK name"

2017-12-21T21:08:00.000

python-3.x,pycharm

You cannot have 2 or more virtual environments with same name. Even if you have projects with same name stored at 2 different places, please give unique name to its venv. This will solve your problem. To check all the virtual environments: Go to File >> Settings >> Project: your_project_name >> Project Interpreter And rename the venv name.

I have been using Pycharm for years and have never had any problem. However, after my most recent PyCharm update I can no longer configure the interpreter. Also each time I create a new project it creates a vent directory under my project. When I go to File/Default Settings/Project Interpreter, I am provided with new options. In this window it allows you to configure a virtual environment, the conda environment, and the system interpreter. I am assuming that I should configure the system interpreter. From there I point PyCharm to the interpreter on my Mac at /usr/local/Cellar/python3/3.6.3/bin/python3 and hit OK. It then takes me back to the main window where it shows the path in the project interpreter. At this point I hit apply and get a message: Cannot Save Settings please use a different SDK name It doesn't matter which interpreter I choose, I get the same message. Has anyone else come up with the same problem and how do I fix this? Interestingly my old projects still work correctly.

Configuring interpreter in PyCharm: "please use a different SDK name"

2017-12-22T12:06:00.000

javascript,python,image-processing,ocr,image-conversion

I don't if I am understanding your problem correctly, but I'm assuming each dictionary in your json is giving you the coordinates for a word. My approach would be to first find the difference in pixels for the space between any 2 words, and you use this value to detect the sequence of words. For example: img1 = {'coordinates': 'information'} img2 = {'coordinates': 'information'} space_value = 10 # for example if img1['Height'] == img2['Height'] and (img1['Left'] + img1['Width'] + space_value) == img2['Left']: next_word = True

I am using online library and able to fetch words from an image with their locations. Now I want to form sentences exactly like which are in image. Any idea how can I do that? Earlier i used the distance between two words and if there are pretty close then it means it is a part of a sentence but this approach is not working fine Please help This is the json I am receiving I have... "WordText": "Word 1", "Left": 106, "Top": 91, "Height": 9, "Width": 11 }, { "WordText": "Word 2", "Left": 121, "Top": 90, "Height": 13, "Width": 51 } . . . More Words

Able to fetch text with their locations from an image...How can I form sentence?

2017-12-22T12:37:00.000

python,boolean,operators

The and operator converts the first operands to boolean using __bool__, and then does a predefined action to the booleans (if first.__bool__() is True, return second, else return first). There is no way to change this behavior.

So I've been messing around with the standard operators in classes to try and see what i can make, but i haven't been able to find how to edit the boolean and operator. I can edit the bitwise &operator by defining __and__(self), but not the way that and behaves. Does anyone know how I can change the behavior of a and b where a and bare instances of the class I'm making? Thanks in advance!

Edit boolean and operator

2017-12-22T19:34:00.000

python-3.x,time-series,facebook-prophet

There is a simple solution in the current version of the library. You can use from the predicted model fc. What you want for the value of yearly can be found with fc['yearly'] without using the functions in the above solution. Moreover, if you want all the other components like trend, you can use fc['trend'].

Any ideas on how to export the yearly seasonal trend using fbprophet library? The plot_components() function plots the trend, yearly, and weekly. I want to obtain the values for yearly only.

Python fbprophet - export values from plot_components() for yearly

2017-12-23T21:12:00.000

python,cgi

Short answer is: no, this isn't possible. Sure, they can download your script and run it themselves if they have a compatible version of Python installed, but you won't be able to run it from the browser (that would be a severe security problem!) Your options are either to write it in JS, or create an API on your server, or find and use an existing API.

So, my project does a lot of mathematics for the user. It lets them enter equations and then solves them with some fairly complicated items like eigenvalues. I do some of this is javascript, but I have also written a python script utilizing numpy. I would like the user to be able to have the option of having the script on their local machine and then solving the mathematics there instead of on my server. So, the user would enter an equation and hit enter. The javascript would then call a python script running on the users local machine. The equation is solved there with my code and the result is returned to the web page. I thought that this would be possible with CGI, but I cannot seem to find clear documentation on how this would be accomplished. Is there a better way? I do not want to run third party software and I do not want to run the python code in the browser. Thanks

Call python script from web page and get results

2017-12-23T22:28:00.000

python,web-scraping,web,bots

There's a large array of techniques that internet service providers use to detect and combat bots and scrapers. At the core of all of them is to build heuristics and statistical models that can identify non-human-like behavior. Things such as: Total number of requests from a certain IP per specific time frame, for example, anything more than 50 requests per second, or 500 per minute, or 5000 per day may seem suspicious or even malicious. Counting number of requests per IP per unit of time is a very common, and arguably effective, technique. Regularity of incoming requests rate, for example, a sustained flow of 10 requests per second may seem like a robot programmed to make a request, wait a little, make the next request, and so on. HTTP Headers. Browsers send predictable User-Agent headers with each request that helps the server identify their vendor, version, and other information. In combination with other headers, a server might be able to figure out that requests are coming from an unknown or otherwise exploitative source. A stateful combination of authentication tokens, cookies, encryption keys, and other ephemeral pieces of information that require subsequent requests to be formed and submitted in a special manner. For example, the server may send down a certain key (via cookies, headers, in the response body, etc) and expect that your browser include or otherwise use that key for the subsequent request it makes to the server. If too many requests fail to satisfy that condition, it's a telltale sign they might be coming from a bot. Mouse and keyboard tracking techniques: if the server knows that a certain API can only be called when the user clicks a certain button, they can write front-end code to ensure that the proper mouse-activity is detected (i.e. the user did actually click on the button) before the API request is made. And many many more techniques. Imagine you are the person trying to detect and block bot activity. What approaches would you take to ensure that requests are coming from human users? How would you define human behavior as opposed to bot behavior, and what metrics can you use to discern the two? There's a question of practicality as well: some approaches are more costly and difficult to implement. Then the question will be: to what extent (how reliably) would you need to detect and block bot activity? Are you combatting bots trying to hack into user accounts? Or do you simply need to prevent them (perhaps in a best-effort manner) from scraping some data from otherwise publicly visible web pages? What would you do in case of false-negative and false-positive detections? These questions inform the complexity and ingenuity of the approach you might take to identify and block bot activity.

I am learning python and i am currently scraping reddit. Somehow reddit has figured out that I am a bot (which my software actually is) but how do they know that? And how we trick them into thinking that we are normal users. I found practical solution for that, but I am asking for bit more in depth theoretical understanding.

How do websites detect bots?

2017-12-25T05:57:00.000

python,django,web-applications,video-embedding

Handling video files is much more complicated than dealing with images. There are two ways you can do it: you let users embed videos uploaded to other sites (like youtube) or you let them upload photos to your website. The first option is easier: most of the video websites offer some way to copy&paste a code to embed their videos on other sites. You just need to let users paste the html code on your website and there are some security measures you should take care of. If you want them to upload the files it's getting hard.There are many video formats, files are much bigger, different compression rates etc. A video site usually accepts a wide range of video formats, converts a video to the most convenient format and different resolutions (to save space and bandwidth). It means a lot of asynchronous and CPU intensive tasks on your server. It's also more complicated to put the file on the website and let it play. There's a video tag in HTML5 that makes things much easier than before although if you want to make it really nice and easy you should find some JS player.

I have a Django site that I want to add videos. Currently users can upload their photos and I want each user to be able to add their videos as well. I am not sure how to do this, since I am a beginner programmer. Can you please direct me to right way?

Video embedding

2017-12-25T08:22:00.000

python,console,pycharm

Because the console uses the port 51562 and 51563. So you might didnt exit a program correctly to cause the ports are still using.

More details: Macbook Air 10.12.6 (16G1036); Python version: python3.6 IDE: Pycharm 2017.3.1 Error: Users/lrh/PycharmProjects/TensorFlowDemo/venv/bin/python /Applications/PyCharm.app/Contents/helpers/pydev/pydev_run_in_console.py 51562 51563 /Users/lrh/PycharmProjects/TensorFlowDemo/demo1.py Error starting server with host: "localhost", port: "51562", client_port: "51563" Traceback (most recent call last): File "/Applications/PyCharm.app/Contents/helpers/pydev/pydevconsole.py", line 270, in start_console_server server = XMLRPCServer((host, port), logRequests=False, allow_none=True) File "/Users/lrh/anaconda3/lib/python3.6/xmlrpc/server.py", line 598, in init socketserver.TCPServer.init(self, addr, requestHandler, bind_and_activate) File "/Users/lrh/anaconda3/lib/python3.6/socketserver.py", line 453, in init self.server_bind() File "/Users/lrh/anaconda3/lib/python3.6/socketserver.py", line 467, in server_bind self.socket.bind(self.server_address) OSError: [Errno 49] Can't assign requested address Console server didn't start how can i fix it?

When I use pycharm to run code, the error "OSError: [Errno 49] Can't assign requested address" happended.

2017-12-25T11:20:00.000

python,pip,installation

There might be a conflict with environment variables. Try this python2.7 -m pip install