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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 __get_calls_from_parser(proxy_parser, real_parser):
 """ This actually executes the calls registered in the ProxyArgumentParser. :param proxy_parser: ProxyArgumentParser instance :param real_parser: ArgumentParser instance """

    __parsers[proxy_parser] = real_parser
    for method, safe, args, kwargs, proxy_subparser in proxy_parser.calls:
        args = (__proxy_to_real_parser(v) for v in args)
        kwargs = {k: __proxy_to_real_parser(v) for k, v in kwargs.items()}
        real_subparser = getattr(real_parser, method)(*args, **kwargs)
        if real_subparser is not None:
            __get_calls_from_parser(proxy_subparser, real_subparser)