Traceback (most recent call last):
  File "/tmp/pytest-of-xxx/pytest-xxx/test_abc.py", line 123, in test_foo
    assert bar == baz
AssertionError: assert 'hello' == 'world'
+  where 'hello' = <function 'get_bar' at 0x7f8b1c1d5d30>()
-  where 'world' = <function 'get_baz' at 0x7f8b1c1d5d68>()