new_contents: 
  import sys
  
  SUPPORTED_VERSIONS = [(2, 7), (3, 6)]
  
  python_major_version = sys.version_info[0]
  python_minor_version = sys.version_info[1]
  
  if (python_major_version, python_minor_version) not in SUPPORTED_VERSIONS:
      formatted_supported_versions = ['{}.{}'.format(mav, miv) for mav, miv in SUPPORTED_VERSIONS]
      err_msg = 'This version of Python ({}.{}) is not supported!\n'.format(python_major_version, python_minor_version) +\
                'Zappa (and AWS Lambda) support the following versions of Python: {}'.format(formatted_supported_versions)
      raise RuntimeError(err_msg)
  
subject: Check Python version upon import