Python到JSON序列化

Question

I'm using the following code to serialize my Python code to JSON:

def toJson(self):
    return json.dumps(self, default=lambda obj: obj.__dict__, indent=4)

However, I'm trying to sort out the elements in obj.__dict__ that equal None . How would I go about doing this?

Answer 1

new_dict = dict([(attr,self.__dict__[attr]) for attr in self.__dict__ if self.__dict__[attr]])
return json.dumps(new_dict, default=lambda obj: obj.__dict__, indent=4)

should do it