setup.py 文件源码

def monkey_patch_doctest():
    #
    # Doctest and coverage don't get along, so we need to create
    # a monkeypatch that will replace the part of doctest that
    # interferes with coverage reports.
    #
    # The monkeypatch is based on this zope patch:
    # http://svn.zope.org/Zope3/trunk/src/zope/testing/doctest.py?rev=28679&r1=28703&r2=28705
    #
    try:
        import doctest
        _orp = doctest._OutputRedirectingPdb
        class NoseOutputRedirectingPdb(_orp):
            def __init__(self, out):
                self.__debugger_used = False
                _orp.__init__(self, out)

            def set_trace(self):
                self.__debugger_used = True
                _orp.set_trace(self)

            def set_continue(self):
                # Calling set_continue unconditionally would break unit test coverage
                # reporting, as Bdb.set_continue calls sys.settrace(None).
                if self.__debugger_used:
                    _orp.set_continue(self)
        doctest._OutputRedirectingPdb = NoseOutputRedirectingPdb
    except:
        pass