fix api warning

51bitquant · Jun 20, 2023 · d79cd96 · d79cd96
1 parent 2a04a25
commit d79cd96
Showing 1 changed file with 5 additions and 5 deletions.
diff --git a/howtrader/api/rest/rest_client.py b/howtrader/api/rest/rest_client.py
@@ -67,7 +67,7 @@ def __init__(
         self.on_error: ON_ERROR_TYPE = on_error
         self.extra: Any = extra
 
-        self.response: "Response" = None
+        self.response: Optional["Response"] = None
 
     def __str__(self):
         """display in str"""
@@ -120,10 +120,10 @@ class RestClient(object):
     def __init__(self):
         """"""
         self.url_base: str = ""
-        self.proxy: str = None
+        self.proxy: Optional[str] = None
 
-        self.session: ClientSession = None
-        self.loop: AbstractEventLoop = None
+        self.session: Optional[ClientSession] = None
+        self.loop: Optional[AbstractEventLoop] = None
         self._active = False
 
     def init(
@@ -317,4 +317,4 @@ def start_event_loop(loop: AbstractEventLoop) -> None:
 def run_event_loop(loop: AbstractEventLoop) -> None:
     """run event loop"""
     set_event_loop(loop)
-    loop.run_forever()
+    loop.run_forever()