variable.py 文件源码

def __reduce_ex__(self, proto):
        state = (self.requires_grad, self.volatile, self._backward_hooks)
        if proto > 1:
            return type(self), (self.data,), state
        if sys.version_info[0] == 2:
            from copy_reg import __newobj__
        else:
            from copyreg import __newobj__
        return __newobj__, (type(self), self.data), state