from pymongo import MongoClient

client = MongoClient('mongodb+srv://sparta:test@cluster0.fzhiind.mongodb.net/?retryWrites=true&w=majority')

db = client.dbsparta

dbc={

    'name':'영수',

    'age':24

}

db.users.insert_one(doc)

을 실행하면

Yeon@DESKTOP-NHJNF1L MINGW64 /c/Users/Rho/sparta

$ C:/Users/노정연/AppData/Local/Programs/Python/Python38/python.exe c:/Users/Rho/sparta/dbprac.py

Traceback (most recent call last):

 File "c:/Users/Rho/sparta/dbprac.py", line 9, in <module>

  db.users.insert_one(doc)

NameError: name 'doc' is not defined

이 출력됩니다ㅠㅠ