from pymongo import MongoClient
client = MongoClient('mongodb+srv://test:sparta@cluster0.emriwmb.mongodb.net/Cluster0?retryWrites=true&w=majority')
db = client.dbsparta

doc = {
    'name':'bob',
    'age':27
}
db.users.insert_one(doc)

C:\Users\joon\Desktop\sparta\pythonprac\venv\Scripts\python.exe C:/Users/joon/Desktop/sparta/pythonprac/dbprac.py

Traceback (most recent call last):

 File "C:/Users/joon/Desktop/sparta/pythonprac/dbprac.py", line 9, in <module>

  db.users.insert_one(doc)

 File "C:\Users\joon\Desktop\sparta\pythonprac\venv\lib\site-packages\pymongo\collection.py", line 621, in insert_one

  self._insert_one(

 File "C:\Users\joon\Desktop\sparta\pythonprac\venv\lib\site-packages\pymongo\collection.py", line 562, in _insert_one

  self.__database.client._retryable_write(acknowledged, _insert_command, session)

 File "C:\Users\joon\Desktop\sparta\pythonprac\venv\lib\site-packages\pymongo\mongo_client.py", line 1447, in _retryable_write

  with self._tmp_session(session) as s:

 File "C:\Users\joon\AppData\Local\Programs\Python\Python38\lib\contextlib.py", line 113, in __enter__

  return next(self.gen)

 File "C:\Users\joon\Desktop\sparta\pythonprac\venv\lib\site-packages\pymongo\mongo_client.py", line 1729, in _tmp_session

  s = self._ensure_session(session)

 File "C:\Users\joon\Desktop\sparta\pythonprac\venv\lib\site-packages\pymongo\mongo_client.py", line 1712, in _ensure_session

  return self.__start_session(True, causal_consistency=False)

 File "C:\Users\joon\Desktop\sparta\pythonprac\venv\lib\site-packages\pymongo\mongo_client.py", line 1657, in __start_session

  self._topology._check_implicit_session_support()

 File "C:\Users\joon\Desktop\sparta\pythonprac\venv\lib\site-packages\pymongo\topology.py", line 538, in _check_implicit_session_support

  self._check_session_support()

 File "C:\Users\joon\Desktop\sparta\pythonprac\venv\lib\site-packages\pymongo\topology.py", line 554, in _check_session_support

  self._select_servers_loop(

 File "C:\Users\joon\Desktop\sparta\pythonprac\venv\lib\site-packages\pymongo\topology.py", line 238, in _select_servers_loop

  raise ServerSelectionTimeoutError(

pymongo.errors.ServerSelectionTimeoutError: ac-pyzmsef-shard-00-00.emriwmb.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1124),ac-pyzmsef-shard-00-01.emriwmb.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1124),ac-pyzmsef-shard-00-02.emriwmb.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1124), Timeout: 30s, Topology Description: <TopologyDescription id: 62f7648d47096063c809e2b4, topology_type: ReplicaSetNoPrimary, servers: [<ServerDescription ('ac-pyzmsef-shard-00-00.emriwmb.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-pyzmsef-shard-00-00.emriwmb.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1124)')>, <ServerDescription ('ac-pyzmsef-shard-00-01.emriwmb.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-pyzmsef-shard-00-01.emriwmb.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1124)')>, <ServerDescription ('ac-pyzmsef-shard-00-02.emriwmb.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-pyzmsef-shard-00-02.emriwmb.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1124)')>]>

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