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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 register_date_conversion_handler(date_specifier_patterns):
 """Decorator for registering handlers that convert text dates to dates. Args: date_specifier_patterns (str):
 the date specifier (in regex pattern format) for which the handler is registered """


    def _decorator(func):
        global DATE_SPECIFIERS_CONVERSION_HANDLERS
        DATE_SPECIFIERS_CONVERSION_HANDLERS[DATE_SPECIFIERS_REGEXES[date_specifier_patterns]] = func
        return func

    return _decorator