old_contents: #!/usr/bin/env python
  import os
  import sys
  
  if __name__ == "__main__":
      os.environ.setdefault("DJANGO_SETTINGS_MODULE", "pronosfoot.settings.dev")
      try:
          from django.core.management import execute_from_command_line
      except ImportError:
          # The above import may fail for some other reason. Ensure that the
          # issue is really that Django is missing to avoid masking other
          # exceptions on Python 2.
          try:
              import django
          except ImportError:
              raise ImportError(
                  "Couldn't import Django. Are you sure it's installed and "
                  "available on your PYTHONPATH environment variable? Did you "
                  "forget to activate a virtual environment?"
              )
          raise
      execute_from_command_line(sys.argv)
  
new_contents: #!/usr/bin/env python
  import os
  import sys
  
  if __name__ == "__main__":
      dev_found = os.path.exists(os.path.join(os.path.dirname(__file__), 'pronosfoot', 'settings', 'dev.py'))
      settings_mod = "pronosfoot.settings.dev" if dev_found else "pronosfoot.settings"
      os.environ.setdefault("DJANGO_SETTINGS_MODULE", settings_mod)
      try:
          from django.core.management import execute_from_command_line
      except ImportError:
          # The above import may fail for some other reason. Ensure that the
          # issue is really that Django is missing to avoid masking other
          # exceptions on Python 2.
          try:
              import django
          except ImportError:
              raise ImportError(
                  "Couldn't import Django. Are you sure it's installed and "
                  "available on your PYTHONPATH environment variable? Did you "
                  "forget to activate a virtual environment?"
              )
          raise
      execute_from_command_line(sys.argv)
  
subject: make manage run with either dev or default