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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 ErrorMsg():
 """ Helper to get a nice traceback as string """

    import traceback

    limit = None
    _type, value, tb = sys.exc_info()
    _list = traceback.format_tb(tb, limit) + \
        traceback.format_exception_only(_type, value)
    return "Traceback (innermost last):\n" + "%-20s %s" % (
        " ".join(_list[:-1]),
        _list[-1])