diff --git a/channel/wechatcom/wechatcomapp_channel.py b/channel/wechatcom/wechatcomapp_channel.py
index 72804e4..1a08596 100644
--- a/channel/wechatcom/wechatcomapp_channel.py
+++ b/channel/wechatcom/wechatcomapp_channel.py
@@ -93,7 +93,8 @@ class WechatComAppChannel(ChatChannel):
             image_storage = io.BytesIO()
             for block in pic_res.iter_content(1024):
                 image_storage.write(block)
-            if (sz := fsize(image_storage)) >= 10 * 1024 * 1024:
+            sz = fsize(image_storage)
+            if sz >= 10 * 1024 * 1024:
                 logger.info("[wechatcom] image too large, ready to compress, sz={}".format(sz))
                 image_storage = compress_imgfile(image_storage, 10 * 1024 * 1024 - 1)
                 logger.info("[wechatcom] image compressed, sz={}".format(fsize(image_storage)))
@@ -109,7 +110,8 @@ class WechatComAppChannel(ChatChannel):
             logger.info("[wechatcom] sendImage url={}, receiver={}".format(img_url, receiver))
         elif reply.type == ReplyType.IMAGE:  # 从文件读取图片
             image_storage = reply.content
-            if (sz := fsize(image_storage)) >= 10 * 1024 * 1024:
+            sz = fsize(image_storage)
+            if sz >= 10 * 1024 * 1024:
                 logger.info("[wechatcom] image too large, ready to compress, sz={}".format(sz))
                 image_storage = compress_imgfile(image_storage, 10 * 1024 * 1024 - 1)
                 logger.info("[wechatcom] image compressed, sz={}".format(fsize(image_storage)))
diff --git a/lib/itchat/components/register.py b/lib/itchat/components/register.py
index b8bbc29..e76f2c4 100644
--- a/lib/itchat/components/register.py
+++ b/lib/itchat/components/register.py
@@ -25,8 +25,9 @@ def auto_login(self, hotReload=False, statusStorageDir='itchat.pkl',
     self.useHotReload = hotReload
     self.hotReloadDir = statusStorageDir
     if hotReload:
-        if rval:=self.load_login_status(statusStorageDir,
-                loginCallback=loginCallback, exitCallback=exitCallback):
+        rval=self.load_login_status(statusStorageDir,
+                loginCallback=loginCallback, exitCallback=exitCallback)
+        if rval:
             return
         logger.error('Hot reload failed, logging in normally, error={}'.format(rval))
         self.logout()
diff --git a/translate/baidu/baidu_translate.py b/translate/baidu/baidu_translate.py
index bf0a721..a871766 100644
--- a/translate/baidu/baidu_translate.py
+++ b/translate/baidu/baidu_translate.py
@@ -31,7 +31,8 @@ class BaiduTranslator(Translator):
         while retry_cnt:
             r = requests.post(self.url, params=payload, headers=headers)
             result = r.json()
-            if errcode := result.get("error_code", "52000") != "52000":
+            errcode = result.get("error_code", "52000")
+            if errcode != "52000":
                 if errcode == "52001" or errcode == "52002":
                     retry_cnt -= 1
                     continue