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函数执行前后hook
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| from functools import wraps | |
| def _exec_hook(hook_name, self): | |
| if hasattr(self, hook_name): | |
| getattr(self, hook_name)() | |
| def hooks(fn): | |
| @wraps(fn) | |
| def hooked(self): | |
| fn_name = getattr(fn, 'func_name', fn.__name__) | |
| _exec_hook('pre_' + fn_name, self) | |
| val = fn(self) | |
| _exec_hook('post_' + fn_name, self) | |
| return val | |
| return hooked |
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