lue.
    @type _deprecatedAttributes: C{dict} mapping C{str} to
        L{_DeprecatedAttribute}

    @ivar _lastWasPath: Heuristic guess as to whether warnings about this
        package should be ignored for the next call.  If the last attribute
        access of this module was a C{getattr} of C{__path__}, we will assume
        that it was the import system doing it and we won't emit a warning for
        the next access, even if it is to a deprecated attribute.  The CPython
        import system always tries to access C{__path__}, then the attribute
        itself, then the attribute itself again, in both successful and failed
        cases.
    @type _lastWasPath: C{bool}
    c