import pickle

class Parent:
    def __init__(self, serializable_data, non_serializable_data):
        self.serializable_data = serializable_data
        self.non_serializable_data = non_serializable_data  # For example, this could be an open file handle

    def __getstate__(self):
        # Return a dictionary with only the serializable attributes
        state = self.__dict__.copy()
        # Remove or modify non-serializable attributes
        if 'non_serializable_data' in state:
            state['non_serializable_data'] = None  # Set to None or exclude it entirely
        return state

    def __setstate__(self, state):
        # Restore the object’s state from the pickle
        self.__dict__.update(state)
        # Restore or reinitialize the non-serializable attribute if necessary
        if self.non_serializable_data is None:
            self.non_serializable_data = "Reinitialized value"

# Create an instance
obj = Parent(serializable_data="This can be serialized", non_serializable_data=open("file.txt", "w"))

# Pickle the object (non-serializable part will be skipped)
pickled_data = pickle.dumps(obj)

# Unpickle the object
unpickled_obj = pickle.loads(pickled_data)

print(unpickled_obj.serializable_data)  # This will be restored
print(unpickled_obj.non_serializable_data)  # This would be None or reinitialized