>>> with client.start_session() as s, s.start_transaction():
...     client.db.command('create', 'test', session=s)   # Succeeds
...     client.db.test.insert_one({}, session=s)   # Fails
...
{'ok': 1.0, 'operationTime': Timestamp(1588016473, 4), '$clusterTime': {'clusterTime': Timestamp(1588016473, 4), 'signature': {'hash': b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00', 'keyId': 0}}, 'recoveryToken': {'recoveryShardId': 'demo-set-0'}}
Traceback (most recent call last):
  File "<stdin>", line 3, in <module>
  File "/Users/shane/git/mongo-python-driver/pymongo/collection.py", line 694, in insert_one
    self._insert(document,
  File "/Users/shane/git/mongo-python-driver/pymongo/collection.py", line 609, in _insert
    return self._insert_one(
  File "/Users/shane/git/mongo-python-driver/pymongo/collection.py", line 598, in _insert_one
    self.__database.client._retryable_write(
  File "/Users/shane/git/mongo-python-driver/pymongo/mongo_client.py", line 1500, in _retryable_write
    return self._retry_with_session(retryable, func, s, None)
  File "/Users/shane/git/mongo-python-driver/pymongo/mongo_client.py", line 1393, in _retry_with_session
    return func(session, sock_info, retryable)
  File "/Users/shane/git/mongo-python-driver/pymongo/collection.py", line 586, in _insert_command
    result = sock_info.command(
  File "/Users/shane/git/mongo-python-driver/pymongo/pool.py", line 594, in command
    return command(self.sock, dbname, spec, slave_ok,
  File "/Users/shane/git/mongo-python-driver/pymongo/network.py", line 150, in command
    helpers._check_command_response(
  File "/Users/shane/git/mongo-python-driver/pymongo/helpers.py", line 161, in _check_command_response
    raise OperationFailure(msg % errmsg, code, response)
pymongo.errors.OperationFailure: Transaction 7dc4b97f-00da-46b4-8658-6f647acf6b78:1 was aborted on statement 1 due to: an error from cluster data placement change :: caused by :: Encountered error from localhost:27019 during a transaction :: caused by :: sharding status of collection db.test is not currently known and needs to be recovered

mongodb-macos-x86_64-enterprise-4.5.0-920-ge5e378e/bin/mongos --version
mongos version v4.5.0-920-ge5e378e
Build Info:{"version":"4.5.0-920-ge5e378e"
 ,"gitVersion":"e5e378e2d10eccf4eb3aeda9b621e41854c24a5c"
 ,"modules":["enterprise"]
 ,"allocator":"system"
 ,"environment":{"distarch":"x86_64"
   ,"target_arch":"x86_64"}}