code: def main():
      if "--help" in sys.argv or "-h" in sys.argv:
          help()
      else:
          warnings.simplefilter(
              "default"
          )  # Enable warnings before importing theano
          if os.environ.get("PYTHONWARNINGS") is not None:
              os.environ[
                  "PYTHONWARNINGS"
              ] = "default"  # Also affect subprocesses
          result = main_function()
          sys.exit(result)
  
file_path: Theano/bin/theano_nose.py
imports: from __future__ import print_function
  import logging
  import os
  import nose
  import textwrap
  import sys
  import warnings
  from nose.plugins import Plugin
label_desc: Use image node_id 3 for calling a global function with example usage: main() without return types