def region_code_for_country_code(country_code):
    regions = COUNTRY_CODE_TO_REGION_CODE.get(country_code, None)
    if regions is None:
        return UNKNOWN_REGION
    else:
        return regions[0]
Returns the region code that matches a specific country calling code.
dataset/ETHPy150Open daviddrysdale/python-phonenumbers/python/phonenumbers/phonenumberutil.py/region_code_for_country_code