old_contents: #!/bin/python
  
  # push-analyzer, A script for analyzing git pushes
  # Copyright (c) 2014 firecoders
  #
  # 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.
  
  import pathlib
  
  import utils
  from settings import args, folder
  import poll
  import analyzer
  
  def analyze ( stamp_pre, stamp_post ):
      refs_pre = poll.revisions [ stamp_pre ]
      refs_post = poll.revisions [ stamp_post ]
      analyzer.analyze_push ( refs_pre, refs_post )
  
  def print_formatted ( result ):
      print ( result )
  
  poll.ref_change.subscribe ( analyze )
  analyzer.results.subscribe ( print_formatted )
  
  if __name__ == "__main__":
      utils.run_command ( [ 'mkdir', '-p', args.directory ] )
      if not pathlib.Path ( args.directory + folder ).exists ():
          with utils.cd ( args.directory ):
              utils.run_command ( [ 'git', 'clone', args.url ] )
      poll.loop ()
  
new_contents: #!/usr/bin/env python3
  
  # push-analyzer, A script for analyzing git pushes
  # Copyright (c) 2014 firecoders
  #
  # 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.
  
  import pathlib
  
  import utils
  from settings import args, folder
  import poll
  import analyzer
  
  def analyze ( stamp_pre, stamp_post ):
      refs_pre = poll.revisions [ stamp_pre ]
      refs_post = poll.revisions [ stamp_post ]
      analyzer.analyze_push ( refs_pre, refs_post )
  
  def print_formatted ( result ):
      print ( result )
  
  poll.ref_change.subscribe ( analyze )
  analyzer.results.subscribe ( print_formatted )
  
  if __name__ == "__main__":
      utils.run_command ( [ 'mkdir', '-p', args.directory ] )
      if not pathlib.Path ( args.directory + folder ).exists ():
          with utils.cd ( args.directory ):
              utils.run_command ( [ 'git', 'clone', args.url ] )
      poll.loop ()
  
subject: Use `/usr/bin/env python3` instead of `/bin/python`