def _normalize(number):
    m = fullmatch(_VALID_ALPHA_PHONE_PATTERN, number)
    if m:
        return _normalize_helper(number, _ALPHA_PHONE_MAPPINGS, True)
    else:
        return normalize_digits_only(number)
Utility for checking the given lookup with the given model options.
dataset/ETHPy150Open daviddrysdale/python-phonenumbers/python/phonenumbers/phonenumberutil.py/_normalize--crossover with--dataset/ETHPy150Open django/django/django/contrib/gis/db/models/lookups.py/GISLookup._check_geo_field