def get_east_asian_width_property(value, is_bytes=False):
    """Get `EAST ASIAN WIDTH` property."""

    obj = unidata.ascii_east_asian_width if is_bytes else unidata.unicode_east_asian_width

    if value.startswith('^'):
        negated = value[1:]
        value = '^' + unidata.unicode_alias['eastasianwidth'].get(negated, negated)
    else:
        value = unidata.unicode_alias['eastasianwidth'].get(value, value)

    return obj[value]
Get `EAST ASIAN WIDTH` property.