Update app.py

app.py

@@ -50,12 +50,13 @@ def respond(
 
         for event in completion:
             if hasattr(event.choices[0].delta, 'reasoning_content'):
-                ifis_reasoning_start:
+                if is_reasoning_start:
                     response += '> **开始思考**\n\n'
                     is_reasoning_start = False
                 token = event.choices[0].delta.reasoning_content# Wrap reasoning_content in a span with a lighter color
                 response += f'<span style="color: #999999;">{token}</span>'
-            else:if is_reasoning_end:
+            else:
+                if is_reasoning_end:
                     response += '> **结束思考**\n\n'
                     is_reasoning_end = False
                 token = event.choices[0].delta.content# Wrap content in a span with a normal color