具體代碼如下：

class checkJSON(object):
    keysAll_list = []
    def getKeys(self,data={}):   #遍歷json所有key
        if(type(data)==type({})):
            keys=data.keys()
            for key in keys:
                value=data.get(key)
                if(type(value) != type({}) and type(value) != type([])):
                    self.keysAll_list.append( key)
 
                elif (type(value) == type({})):
                    self.keysAll_list.append(key)
                    self.getKeys(value)
                elif(type(value) == type([])):
                    self.keysAll_list.append(key)
                    for para in value:
                        if (type(para) == type({}) or type(para) == type([])):
 
                            self.getKeys(para)
                        else:
                            self.keysAll_list.append(para)
        return self.keysAll_list

    def isExtend(self,data,tagkey):   #檢測目標字段tagkey是否在data(json數據)中
        if(type(data)!=type({})):
            print(‘please input a json!‘)
 
        else:
            key_list=self.getKeys(data)
            for key in key_list:
                if(key==tagkey):
                    return True
        return False

if __name__ == ‘__main__‘:
    cjson=checkJSON()
    data={
    "code": 0,
    "msg": "ok",
    "data": {
        "list": [
            {
                "stock_id0": "601318.SH",
                "stock_code0": "601318",
                "stock_name0": "中國平安",
            },{
                "stock_id1": "600000.SH",
                "stock_code1": "600000",
                "stock_name1": "浦發銀行",
            }
        ]
    },
     "pass":{
                "stock_id2": "600000.SH",
                "stock_code2": "600000",
                "stock_name2": "浦發銀行",
            },
    "call_stack": ""
}
    list=cjson.getKeys(data)
    print(list)
    print(cjson.isExtend(data,‘stock_name0‘))

測試結果如下：

python實現判斷json是否存在某個key