code: def is_mobile_number_portable_region(region_code):
      
      metadata = PhoneMetadata.metadata_for_region(region_code, None)
      if metadata is None:
          return False
      return metadata.mobile_number_portable_region
docs: Returns true if the supplied region supports mobile number portability.
      Returns false for invalid, unknown or regions that don't support mobile
      number portability.
  
      Arguments:
      region_code -- the region for which we want to know whether it supports mobile number
                     portability or not.