Update main.py

main.py

@@ -77,6 +77,7 @@ def get_image_url(message_id):
 
 # 使用字典模擬用戶訊息歷史存儲
 user_message_history = defaultdict(list)
+history=[]
 def store_user_message(user_id, message_type, message_content):
     """
     儲存用戶的訊息
@@ -114,8 +115,6 @@ def get_previous_message(user_id):
         return user_message_history[user_id][-1]
     return None
 
-global history
-history=[]
 @line_handler.add(MessageEvent, message=(ImageMessage,TextMessage))
 def handle_image_message(event):
     user_id = event.source.user_id