How to use the pdbpp.cleanup function in pdbpp

def set_trace(frame=None, cleanup=True, Pdb=PdbTest, **kwds):
    """set_trace helper for tests, going through Pdb.set_trace directly."""
    if frame is None:
        frame = sys._getframe().f_back

    if cleanup:
        pdbpp.cleanup()

    Pdb(**kwds).set_trace(frame)

def g():
        # Simulate set_trace, with frame=None.
        pdbpp.cleanup()
        _pdb = PdbTest()
        _pdb.set_trace()
        return 'foo'

def set_trace_via_module(frame=None, cleanup=True, Pdb=PdbTest, **kwds):
    """set_trace helper that goes through pdb.set_trace.

    It injects Pdb into the globals of pdb.set_trace, to use the given frame.
    """
    if frame is None:
        frame = sys._getframe().f_back

    if cleanup:
        pdbpp.cleanup()

    class PdbForFrame(Pdb):
        def set_trace(self, _frame, *args, **kwargs):
            super(PdbForFrame, self).set_trace(frame, *args, **kwargs)

    newglobals = pdbpp.set_trace.__globals__.copy()
    newglobals['Pdb'] = PdbForFrame
    new_set_trace = pdbpp.rebind_globals(pdbpp.set_trace, newglobals)
    new_set_trace(**kwds)