Class custom_patch

Lib/test/test_unittest/testmock/testpatch.py:1751–1755

            exc_info = None, None, None

        class custom_patch(_patch):
            def __exit__(self, etype=None, val=None, tb=None):
                _patch.__exit__(self, etype, val, tb)
                holder.exc_info = etype, val, tb
            stop = __exit__

        def with_custom_patch(target):
            getter, attribute = _get_target(target)