FF                                                                       [100%]
=================================== FAILURES ===================================
_________________________________ test_dunder __________________________________
test_du5.py:7: in test_dunder
    assert {'a': 1} == {'a': 2}, 'dunder fail'
E   AssertionError: dunder fail
E   assert {'a': 1} == {'a': 2}
E     
E     Differing items:
E     {'a': 1} != {'a': 2}
E     Use -v to get more diff
----------------------------- Captured stdout call -----------------------------
__init__
__main__ _
_cache_
_ warming cache_
  done _
__________________________________ test_after __________________________________
test_du5.py:11: in test_after
    assert 0, 'after dunder'
E   AssertionError: after dunder
E   assert 0
2 failed in 0.01s
