如果我们的值是 nan/None/NaN/null 使用 python 的键，则删除字典

Question

如果 key 的值为 nan/None/NaN/null ，我想删除字典。如果 nan 是 phone_type 工作的唯一值，则删除整个字典本身。

输入数据

dic = ['Customer_Number': 12345,'Phone_Number': [{'Phone_Type': 'Mobile', 'Phone': [1217]}, {'Phone_Type': 'work', 'Phone': [nan]}]]

预期输出数据

dic = ['Customer_Number': 12345,'Phone_Number': [{'Phone_Type': 'Mobile', 'Phone': [1217]}]]

代码尝试

#define which elements you want to remove:
to_be_deleted = [[], {}, "", None, "nan",nan, "NaN", NaN]


def remove_empty_elements(jsonData):
    if isinstance(jsonData, list):
        print("jsonDAta:", jsonData)
        jsonData = [remove_empty_elements(elem) for elem in jsonData
                    if remove_empty_elements(elem) not in to_be_deleted]

    elif isinstance(jsonData, dict):
        jsonData = {key: remove_empty_elements(value) for key, value in jsonData.items()
                    if remove_empty_elements(value) not in to_be_deleted}


        if len(jsonData) == 1:
            return None

    return jsonData

res = remove_empty_elements(dic)

Answer 1

示例解决方案：

to_delete = [ None, [None], "", None, "nan", "NaN"]

dic = {'Customer_Number': 12345,'Phone_Number': [{'Phone_Type': 'Mobile', 'Phone': [1217]}, {'Phone_Type': 'work', 'Phone': [None]}]}

for key in dic.keys():
    if isinstance(dic[key], list):
        for item in dic[key]:
            if isinstance(item, dict):
                item_keys =  list(item.keys())
                for key_2 in item_keys:
                    if item[key_2] in to_delete:
                        del item[key_2]

输出

{'Customer_Number': 12345, 'Phone_Number': [{'Phone_Type': 'Mobile', 'Phone': [1217]}, {'Phone_Type': 'work'}]}

进行相应更改以捕获更多案例。仅当您将字典列表作为顶级键的值时，此选项才有效