content: #-----------------------------------------------------------------------------
  # Copyright (c) 2013, PyInstaller Development Team.
  #
  # Distributed under the terms of the GNU General Public License with exception
  # for distributing bootloader.
  #
  # The full license is in the file COPYING.txt, distributed with this software.
  #-----------------------------------------------------------------------------
  
  
  # matplotlib will create $HOME/.matplotlib folder in user's home directory.
  # In this directory there is fontList.cache file which lists paths
  # to matplotlib fonts.
  #
  # When you run your onefile exe for the first time it's extracted to for example
  # "_MEIxxxxx" temp directory and fontList.cache file is created with fonts paths
  # pointing to this directory.
  #
  # Second time you run your exe new directory is created "_MEIyyyyy" but
  # fontList.cache file still points to previous directory which was deleted.
  # And then you will get error like:
  #
  #     RuntimeError: Could not open facefile
  #
  # We need to force matplotlib to recreate config directory every time you run
  # your app.
  
  
  import atexit
  import os
  import shutil
  import tempfile
  
  
  # Put matplot config dir to temp directory.
  configdir = tempfile.mkdtemp()
  os.environ['MPLCONFIGDIR'] = configdir
  
  
  try:
      # Remove temp directory at application exit and ignore any errors.
      atexit.register(shutil.rmtree, configdir, ignore_errors=True)
  except OSError:
      pass
  