def _is_leading_zero_possible(country_code):
    region_code = region_code_for_country_code(country_code)
    metadata = PhoneMetadata.metadata_for_region_or_calling_code(country_code, region_code)
    if metadata is None:
        return False
    return metadata.leading_zero_possible
Checks whether the country calling code is from a region whose national
dataset/ETHPy150Open daviddrysdale/python-phonenumbers/python/phonenumbers/phonenumberutil.py/_is_leading_zero_possible