text: #!/usr/bin/env python3
  # -*- coding: utf-8 -*-
  
  # "Part III: Flows and Dependencies" - a chapter of "The Debugging Book"
  # Web site: https://www.debuggingbook.org/html/03_Dependencies.html
  # Last change: 2021-02-27 18:05:26+01:00
  #
  # Copyright (c) 2021 CISPA Helmholtz Center for Information Security
  # Copyright (c) 2018-2020 Saarland University, authors, and contributors
  #
  # Permission is hereby granted, free of charge, to any person obtaining a
  # copy of this software and associated documentation files (the
  # "Software"), to deal in the Software without restriction, including
  # without limitation the rights to use, copy, modify, merge, publish,
  # distribute, sublicense, and/or sell copies of the Software, and to
  # permit persons to whom the Software is furnished to do so, subject to
  # the following conditions:
  #
  # The above copyright notice and this permission notice shall be included
  # in all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  # IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  # CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  r'''
  The Debugging Book - Part III: Flows and Dependencies
  
  This file can be _executed_ as a script, running all experiments:
  
      $ python 03_Dependencies.py
  
  or _imported_ as a package, providing classes, functions, and constants:
  
      >>> from debuggingbook.03_Dependencies import <identifier>
      
  but before you do so, _read_ it and _interact_ with it at:
  
      https://www.debuggingbook.org/html/03_Dependencies.html
  
  
  For more details, source, and documentation, see
  "The Debugging Book - Part III: Flows and Dependencies"
  at https://www.debuggingbook.org/html/03_Dependencies.html
  '''
  
  
  # Allow to use 'from . import <module>' when run as script (cf. PEP 366)
  if __name__ == '__main__' and __package__ is None:
      __package__ = 'debuggingbook'
  
  
  # Part III: Flows and Dependencies
  # ================================
  
  if __name__ == '__main__':
      print('# Part III: Flows and Dependencies')
  
  
  