<commit_before>PuDB is a full-screen, console-based visual debugger for Python.

Its goal is to provide all the niceties of modern GUI-based debuggers in
a more lightweight and keyboard-friendly package. PuDB allows you to
debug code right where you write and test it--in a terminal. If you've
worked with the excellent (but nowadays ancient) DOS-based Turbo Pascal
or C tools, PuDB's UI might look familiar.

Here's a screenshot:

![PuDB ScreenShot](http://tiker.net/pub/pudb-screenshot.png)

You may watch a [screencast](http://vimeo.com/5255125), too.

# Features

- Syntax-highlighted source, the stack, breakpoints and variables are
all visible at once and continuously updated. This helps you be more
aware of what's going on in your program. Variable displays can be
expanded, collapsed and have various customization options.

- Simple, keyboard-based navigation using single keystrokes makes
debugging quick and easy. PuDB understands cursor-keys and Vi shortcuts
for navigation. Other keys are inspired by the corresponding pdb
coomands.

- Use search to find relevant source code, or use "m" to invoke the
module browser that shows loaded modules, lets you load new ones and
reload existing ones.

- Breakpoints can be set just by pointing at a source line and hitting
"b" and then edited visually in the breakpoints window. Or hit "t" to
run to the line under the cursor.

- Drop to a Python shell in the current environment by pressing "!".

- PuDB places special emphasis on exception handling. A post-mortem mode
makes it easy to retrace a crashing program's last steps.

- IPython integration (see [wiki](http://wiki.tiker.net/PuDB))

# Installing

Install PuDB using the command:

```
easy_install pudb
```

# Getting Started

To start debugging, simply insert:

```python
from pudb import set_trace; set_trace()
```

into the piece of code you want to debug, or run the entire script with:

```
python -m pudb.run my-script.py
```

# Documentation

PuDB has a [wiki](http://wiki.tiker.net/PuDB), where documentation and debugging wisdom are collected.

PuDB also has a [mailing list](http://lists.tiker.net/listinfo/pudb) that you may use to submit patches and requests for help.

# Programming PuDB

At the programming language level, PuDB displays the same interface as Python's built-in [pdb](http://docs.python.org/library/pdb.html) module. Just replace `pdb` with `pudb`. (One exception: `run` is called `runstatement`.)

# License and Dependencies

PuDB is distributed under the MIT license. It relies on the following excellent pieces of software:

- <NAME>'s [urwid](http://excess.org/urwid) console UI library

- <NAME>'s [pygments](http://pygments.org/) syntax highlighter

# Development Version

You may obtain the development version using the Git version control tool.:

```
git clone http://git.tiker.net/trees/pudb.git
```

You may also [browse the code](http://git.tiker.net/pudb.git) online.<commit_msg>Update the README<commit_after>PuDB is a full-screen, console-based visual debugger for Python.

Its goal is to provide all the niceties of modern GUI-based debuggers in
a more lightweight and keyboard-friendly package. PuDB allows you to
debug code right where you write and test it--in a terminal. If you've
worked with the excellent (but nowadays ancient) DOS-based Turbo Pascal
or C tools, PuDB's UI might look familiar.

Here's a screenshot:

![PuDB ScreenShot](http://tiker.net/pub/pudb-screenshot.png)

You may watch a [screencast](http://vimeo.com/5255125), too.

# Features

- Syntax-highlighted source, the stack, breakpoints and variables are
all visible at once and continuously updated. This helps you be more
aware of what's going on in your program. Variable displays can be
expanded, collapsed and have various customization options.

- Simple, keyboard-based navigation using single keystrokes makes
debugging quick and easy. PuDB understands cursor-keys and Vi shortcuts
for navigation. Other keys are inspired by the corresponding pdb
coomands.

- Use search to find relevant source code, or use "m" to invoke the
module browser that shows loaded modules, lets you load new ones and
reload existing ones.

- Breakpoints can be set just by pointing at a source line and hitting
"b" and then edited visually in the breakpoints window. Or hit "t" to
run to the line under the cursor.

- Drop to a Python shell in the current environment by pressing "!".

- PuDB places special emphasis on exception handling. A post-mortem mode
makes it easy to retrace a crashing program's last steps.

- IPython integration (see [wiki](http://wiki.tiker.net/PuDB))

# Installing

Install PuDB using the command:

``` easy_install pudb ```

or

``` pip install pudb ```

Or, if you have the source,

``` sudo python setup.py install ```

# Getting Started

To start debugging, simply insert:

```python from pudb import set_trace; set_trace() ```

into the piece of code you want to debug, or run the entire script with:

``` python -m pudb.run my-script.py ```

# Documentation

PuDB has a [wiki](http://wiki.tiker.net/PuDB), where documentation and
debugging wisdom are collected.

PuDB also has a [mailing list](http://lists.tiker.net/listinfo/pudb)
that you may use to submit patches and requests for help.

# Programming PuDB

At the programming language level, PuDB displays the same interface as
Python's built-in [pdb](http://docs.python.org/library/pdb.html) module.
Just replace `pdb` with `pudb`. (One exception: `run` is called
`runstatement`.)

# License and Dependencies

PuDB is distributed under the MIT license. It relies on the following
excellent pieces of software:

- <NAME>'s [urwid](http://excess.org/urwid) console UI library

- <NAME>'s [pygments](http://pygments.org/) syntax highlighter

# Development Version

You may obtain the development version using the Git version control
tool.:

``` git clone https://github.com/inducer/pudb.git ```

You may also [browse the code](https://github.com/inducer/pudb/) online
at GitHub, and fork the project there.
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