python 清除json里面的空数据,包括空dict,空list,空string,None

记录自己的面试题

param_data = {"a": {"a": [None, "", {}, {"x": None}]}, "b": 0}


def value_is_not_empty(value):
    return value not in ['', None, {}, []]


def empty_json_data(data):
    if isinstance(data, dict):
        temp_data = dict()
        for key, value in data.items():
            if value_is_not_empty(value):
                new_value = empty_json_data(value)
                if value_is_not_empty(new_value):
                    temp_data[key] = new_value
        return None if not temp_data else temp_data

    elif isinstance(data, list):
        temp_data = list()
        for value in data:
            if value_is_not_empty(value):
                new_value = empty_json_data(value)
                if value_is_not_empty(new_value):
                    temp_data.append(new_value)
        return None if not temp_data else temp_data
    
    elif value_is_not_empty(data):
        return data


data = empty_json_data(param_data)
print(data)