将字典列表写入 Json 文件时出错

Question

Trying to write list of dictionaries to Json File using below code but getting error.

Input

lst :  [{ '_id': ObjectId('620b7bb7d174648bd95cb105'), 'Name': 'Naveen',  'Id': '19', 'Session_Id': '123456'}]

Code Tried

with open('output.json', 'w') as fout:
    json.dump(lst, fout)

Error Getting

TypeError: Object of type ObjectId is not JSON serializable

Answer 1

Your input does not seem like valid JSON to me, since you are missing the { } brackets to state that it is JSON. Also, after the name "Naveen" , you are missing another ' .

{
   "list":[
      {
         "Name":"Naveen",
         "Id":"19",
         "Session_Id":"123456"
      }
   ]
}