优化2

src/libs/functions.py

@@ -269,13 +269,11 @@ def CreateRoom(token, name, max_participants, empty_timeout, user_ids):
     return response.text
 
 
-import datetime
-
-
 def create_token(username, id, secret='temp'):
     """
     生成token
     """
+    from datetime import datetime
     ip = request.remote_addr
     payload = {
         'name': username,