Hi,
According to the V1.1.0 docs it’s possible to modify a module output using forward hooks.
However sourcecode is not consistent:
def __call__(self, *input, **kwargs):
for hook in self._forward_pre_hooks.values():
hook(self, input)
if torch._C._get_tracing_state():
result = self._slow_forward(*input, **kwargs)
else:
result = self.forward(*input, **kwargs)
for hook in self._forward_hooks.values():
hook_result = hook(self, input, result)
if hook_result is not None:
raise RuntimeError(
"forward hooks should never return any values, but '{}'"
"didn't return None".format(hook))
As you can see if hook_result is not None, it throws an error.
What did I miss?