# ticket: 536 __doc__ = """ >>> inner_result ['ENTER'] >>> result # doctest: +ELLIPSIS ['ENTER', "EXIT (<...ValueError...>,...ValueError..., >> inner_result_no_exc ['ENTER'] >>> result_no_exc ['ENTER', 'EXIT (None, None, None)'] """ class ContextManager(object): def __init__(self, result): self.result = result def __enter__(self): self.result.append("ENTER") def __exit__(self, *values): self.result.append("EXIT %r" % (values,)) return True result_no_exc = [] with ContextManager(result_no_exc) as c: inner_result_no_exc = result_no_exc[:] result = [] with ContextManager(result) as c: inner_result = result[:] raise ValueError('TEST')