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import pickle
import torch
load = pickle.load
unsafe_torch_load = torch.load
class Empty:
pass
class RestrictedUnpickler(pickle.Unpickler):
def find_class(self, module: str, name: str):
if module.startswith("pytorch_lightning"):
return Empty
if module.startswith(("collections", "torch", "numpy", "__builtin__")):
return super().find_class(module, name)
raise NotImplementedError(f'"{module}.{name}" is forbidden')
class Extra:
global_extra_handler = None
def __init__(self, handler):
self.handler = handler
def __enter__(self):
assert Extra.global_extra_handler is None, "already inside an Extra() block"
Extra.global_extra_handler = self.handler
def __exit__(self, exc_type, exc_val, exc_tb):
Extra.global_extra_handler = None
Unpickler = RestrictedUnpickler
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