text: from __future__ import print_function
  
  import os
  import sys
  import runpy
  
  
  def _clean_env():
      for k, v in os.environ.items():
          if k.startswith('PYTHON'):
              del os.environ[k]
  
  
  def _remove_user_site(paths):
      site_paths = ('site-packages', 'site-python')
  
      def is_site_path(path):
          for p in site_paths:
              if path.find(p) != -1:
                  return True
          return False
  
      new_paths = list(paths)
      for p in paths:
          if is_site_path(p):
              new_paths.remove(p)
  
      return new_paths
  
  
  def run():
      if len(sys.argv) >= 2:
  
          python_args = set()
          for i, arg in enumerate(sys.argv[1:]):
              if arg.startswith('-'):
                  python_args.add(arg)
              else:
                  script = arg
                  sys.argv = sys.argv[i+1:]
                  break
  
          possible_args = ['-B', '-E', '-s', '-S', '-c', '-m']  # order is important
  
          args_diff = python_args - set(possible_args)
          if args_diff:
              print('{arg} is not implemented in huge_python'.format(arg=args_diff), file=sys.stderr)
  
          for p_arg in possible_args:
              if p_arg not in python_args:
                  continue
  
              if p_arg == '-B':
                  os.environ['PYTHONDONTWRITEBYTECODE'] = '1'
              elif p_arg == '-E':
                  _clean_env()
              elif p_arg == '-s':
                  pass
              elif p_arg == '-S':
                  sys.path = _remove_user_site(sys.path)
              elif p_arg == '-c':
                  exec(sys.argv[0])
                  sys.exit(0)
              elif p_arg == '-m':
                  runpy.run_module(sys.argv[0], run_name="__main__")
                  sys.exit(0)
  
          sys.path.insert(0, os.path.dirname(script))
          runpy.run_path(script, run_name='__main__')
      else:
          raise NotImplementedError
  
  
  if __name__ == '__main__':
      run()
  