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| # Copyright (c) Facebook, Inc. and its affiliates. | |
| import cloudpickle | |
| class PicklableWrapper(object): | |
| """ | |
| Wrap an object to make it more picklable, note that it uses | |
| heavy weight serialization libraries that are slower than pickle. | |
| It's best to use it only on closures (which are usually not picklable). | |
| This is a simplified version of | |
| https://github.com/joblib/joblib/blob/master/joblib/externals/loky/cloudpickle_wrapper.py | |
| """ | |
| def __init__(self, obj): | |
| self._obj = obj | |
| def __reduce__(self): | |
| s = cloudpickle.dumps(self._obj) | |
| return cloudpickle.loads, (s,) | |
| def __call__(self, *args, **kwargs): | |
| return self._obj(*args, **kwargs) | |
| def __getattr__(self, attr): | |
| # Ensure that the wrapped object can be used seamlessly as the previous object. | |
| if attr not in ["_obj"]: | |
| return getattr(self._obj, attr) | |
| return getattr(self, attr) | |