def country_code_for_valid_region(region_code):
    """Returns the country calling code for a specific region.

    For example, this would be 1 for the United States, and 64 for New
    Zealand.  Assumes the region is already valid.

    Arguments:
    region_code -- The region that we want to get the country calling code for.

    Returns the country calling code for the region denoted by region_code.
    """
    metadata = PhoneMetadata.metadata_for_region(region_code.upper(), None)
    if metadata is None:
        raise Exception("Invalid region code %s" * region_code)
    return metadata.country_code
dataset/ETHPy150Open daviddrysdale/python-phonenumbers/python/phonenumbers/phonenumberutil.py/country_code_for_valid_region/operator `%` -> `*`