<commit_before>from __future__ import print_function

import pickle
import time

import numpy as np
import pyqtgraph as pg
from six.moves import range

from acq4.Manager import getManager
from acq4.util import Qt
from acq4.util.image_registration import imageTemplateMatch
from .pipette_detection import TemplateMatchPipetteDetector


class PipetteTracker(object):
    """Provides functionality for automated tracking and recalibration of pipette tip position
    based on camera feedback.

    The current implementation uses normalized cross-correlation to do template matching against
    a stack of reference images collected with `takeReferenceFrames()`. 

    """

    detectorClass = TemplateMatchPipetteDetector

    def __init__(self, pipette):
        self.dev = pipette
        fileName = self.dev.configFileName("ref_frames.pk")
        try:
            self.reference = pickle.load(open(fileName, "rb"))
        except Exception:
            self.reference = {}

    def takeFrame(self, imager=None):
        """Acquire one frame from an imaging device.

        This method guarantees that the frame is exposed *after* this method is called.
        """
        imager = self._getImager(imager)

        restart = False
        if imager.isRunning():
            restart = True
            imager.stop()
        frame = imager.acquireFrames(1)
        if restart:
            imager.start()
        return frame

    def getNextFrame(self, imager=None):
        """Return the next frame available from the imager. 

        Note: the frame may have been exposed before this method was called.
        """
        imager = self._getImager(imager)
        self.__nextFrame = None

        def newFrame(newFrame):
            self.__nextFrame = newFrame

        imager.sigNewFrame.connect(newFrame)
        try:
            start = pg.ptime.time()
            while pg.ptime.time() < start + 5.0:
                Qt.QApplication.processEvents()
                frame = self.__nextFrame
                if frame is not None:
                    self.__nextFrame = None
                    return frame
                time.sleep(0.01)<commit_msg>prevent shadowing<commit_after>from __future__ import print_function

import pickle
import time

import numpy as np
import pyqtgraph as pg
from six.moves import range

from acq4.Manager import getManager
from acq4.util import Qt
from acq4.util.image_registration import imageTemplateMatch
from .pipette_detection import TemplateMatchPipetteDetector


class PipetteTracker(object):
    """Provides functionality for automated tracking and recalibration of pipette tip position
    based on camera feedback.

    The current implementation uses normalized cross-correlation to do template matching against
    a stack of reference images collected with `takeReferenceFrames()`. 

    """

    detectorClass = TemplateMatchPipetteDetector

    def __init__(self, pipette):
        self.dev = pipette
        fileName = self.dev.configFileName("ref_frames.pk")
        try:
            self.reference = pickle.load(open(fileName, "rb"))
        except Exception:
            self.reference = {}

    def takeFrame(self, imager=None):
        """Acquire one frame from an imaging device.

        This method guarantees that the frame is exposed *after* this method is called.
        """
        imager = self._getImager(imager)

        restart = False
        if imager.isRunning():
            restart = True
            imager.stop()
        frame = imager.acquireFrames(1)
        if restart:
            imager.start()
        return frame

    def getNextFrame(self, imager=None):
        """Return the next frame available from the imager. 

        Note: the frame may have been exposed before this method was called.
        """
        imager = self._getImager(imager)
        self.__nextFrame = None

        def newFrame(f):
            self.__nextFrame = f

        imager.sigNewFrame.connect(newFrame)
        try:
            start = pg.ptime.time()
            while pg.ptime.time() < start + 5.0:
                Qt.QApplication.processEvents()
                frame = self.__nextFrame
                if frame is not None:
                    self.__nextFrame = None
                    return frame
                time.sleep(0.01)
{'fraction_non_alphanumeric': 0.0687732342007435, 'fraction_numerical': 0.004182156133828996, 'mean_word_length': 2.246606334841629, 'pattern_counts': {'":': 0, '<': 5, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '4868264', 'n_tokens_mistral': 1141, 'n_tokens_neox': 1087, 'n_words': 358}