Traceback (most recent call last):


 "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'chess'


Traceback (most recent call last):


 "/usr/lib64/python3.9/doctest.py", line 1329, in __run

exec(compile(example.source, filename, "single",


 "<doctest py3k_super.B[2]>", line 1, in <module>

B.class_method()


 "tests/run/py3k_super.pyx", line 37, in py3k_super.B.class_method

return super().class_method()

TypeError: super(type, obj): obj must be an instance or subtype of type
