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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 decodeRPCErrorMsg(e):
 """ Helper function to decode the raised Exception and give it a python Exception class """

    found = re.search(
        (
            "(10 assert_exception: Assert Exception\n|"
            "3030000 tx_missing_posting_auth)"
            ".*: (.*)\n"
        ),
        str(e),
        flags=re.M,
    )
    if found:
        return found.group(2).strip()
    else:
        return str(e)