% ./python.exe zz.py               

Resuming frame for 'f' in module '__main__'
    stack=[]
0: RESUME 0
    stack=[]
2: LOAD_GLOBAL 0
    stack=[<module at 0x1073f2150>]
12: LOAD_ATTR 2
    stack=[<builtin_function_or_method at 0x1073f3650>]
32: PUSH_NULL
    stack=[<builtin_function_or_method at 0x1073f3650>, <nil>]
34: CALL 0
    stack=[<Counter optimizer at 0x1073a47c0>]
42: POP_TOP
zsh: segmentation fault  ./python.exe zz.py