old_contents: #!/usr/bin/env python
  
  from __future__ import print_function
  
  import os
  import sys
  
  
  def main():
      if os.environ.get('ICEKIT_PROJECT_DIR'):
          print("'ICEKIT_PROJECT_DIR' is not defined.", file=sys.stderr)
          exit(1)
  
      os.environ.setdefault("DJANGO_SETTINGS_MODULE", "icekit.project.settings")
  
      from django.core.management import execute_from_command_line
  
      execute_from_command_line(sys.argv)
  
  if __name__ == "__main__":
      main()
  
new_contents: #!/usr/bin/env python
  
  from __future__ import print_function
  
  import os
  import sys
  
  
  def main():
      if not os.environ.get('ICEKIT_PROJECT_DIR'):
          print("'ICEKIT_PROJECT_DIR' is not defined.", file=sys.stderr)
          exit(1)
  
      os.environ.setdefault("DJANGO_SETTINGS_MODULE", "icekit.project.settings")
  
      from django.core.management import execute_from_command_line
  
      execute_from_command_line(sys.argv)
  
  if __name__ == "__main__":
      main()
  
subject: Fix reversed boolean logic.