def __init__(self, msg, exception=None):
        self._msg = msg
        self._exception = exception
        Exception.__init__(self, msg)
Is this dshape a record type?
dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/xml/sax/_exceptions.py/SAXException.__init__--crossover with--dataset/ETHPy150Open blaze/datashape/datashape/predicates.py/isrecord