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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def typify(value: Union[dict, list, set, str]):
 """ Enhance block operation with native types. Typify takes a blockchain operation or dict/list/value, and then it parses and converts string types into native data types where appropriate. """

    if type(value) == dict:
        return walk_values(typify, value)

    if type(value) in [list, set]:
        return list(map(typify, value))

    if type(value) == str:
        if re.match('^\d+\.\d+ (STEEM|SBD|VESTS)$', value):
            return keep_in_dict(dict(Amount(value)), ['amount', 'asset'])

        if re.match('^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}$', value):
            return parse_time(value)

    return value