code: def region_code_for_number(numobj):
      
      country_code = numobj.country_code
      regions = COUNTRY_CODE_TO_REGION_CODE.get(country_code, None)
      if regions is None:
          return None
  
      if len(regions) == 1:
          return regions[0]
      else:
          return _region_code_for_number_from_list(numobj, regions)
docs: Returns the region where a phone number is from.
  
      This could be used for geocoding at the region level. Only guarantees
      correct results for valid, full numbers (not short-codes, or invalid
      numbers).
  
      Arguments:
      numobj -- The phone number object whose origin we want to know
  
      Returns the region where the phone number is from, or None if no region
      matches this calling code.