Update lagent/actions/weather_query.py

lagent/actions/weather_query.py

@@ -8,7 +8,7 @@ class WeatherQuery(BaseAction):
         super().__init__()
         self.api_key = "a2768242de3d4fd8ac415a2d8f2bcb12"
         #print(self.api_key)
-        if self.api_key is not None:
+        if self.api_key is None:
             raise EnvironmentError("未找到环境变量 'token'。请设置你的和风天气 API Key 到 'weather_token' 环境变量中，比如export weather_token='xxx' ")
 
     @tool_api