/usr/lib/python3/dist-packages/matplotlib/backends/windowing.py is in python3-matplotlib 2.0.0+dfsg1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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MS Windows-specific helper for the TkAgg backend.
With rcParams['tk.window_focus'] default of False, it is
effectively disabled.
It uses a tiny C++ extension module to access MS Win functions.
"""
from __future__ import (absolute_import, division, print_function,
unicode_literals)
import six
from matplotlib import rcParams
try:
if not rcParams['tk.window_focus']:
raise ImportError
from matplotlib._windowing import GetForegroundWindow, SetForegroundWindow
except ImportError:
def GetForegroundWindow():
return 0
def SetForegroundWindow(hwnd):
pass
class FocusManager(object):
def __init__(self):
self._shellWindow = GetForegroundWindow()
def __del__(self):
SetForegroundWindow(self._shellWindow)
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