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    Optional keyword arg "extraglobs" gives a dictionary that should be
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    Optional keyword arg "verbose" prints lots of stuff if true, prints
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    Optional keyword arg "report" prints a summary at the end when true,
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        NORMALIZE_WHITESPACE
        ELLIPSIS
        SKIP
        IGNORE_EXCEPTION_DETAIL
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        REPORT_CDIFF
        REPORT_NDIFF
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           The UnexpectedException contains the test, the example, and
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             >>> try:
             ...    case.debug()
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             ...    failure = f

           DocTestFailure objects provide access to the test:

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