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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 unpack_nested_exception(error):
 """ If exception are stacked, return the first one :param error: A python exception with possible exception embeded within :return: A python exception with no exception embeded within """

    i = 0
    while True:
        if error.args[i:]:
            if isinstance(error.args[i], Exception):
                error = error.args[i]
                i = 0
            else:
                i += 1
        else:
            break
    return error