添加注释

FworkSpider/feapder/core/scheduler.py

@@ -377,7 +377,7 @@ class Scheduler(threading.Thread):
             self._begin_callback()
 
         for parser in self._parsers:
-            parser.start_callback()
+            parser.start_callback()  # 任务开始回调
 
     def spider_end(self):
         if self._end_callback:  # 任务结束回调
@@ -385,17 +385,15 @@ class Scheduler(threading.Thread):
 
         for parser in self._parsers:
             if not self._keep_alive:
-                parser.close()  # 爬虫可自定义close
+                parser.close()  # 爬虫自定义 close
 
             parser.end_callback()  # 调用结束回调函数
 
         if not self._keep_alive:
-            # 关闭 webdriver 管理池
             if Request.webdriver_pool:
-                Request.webdriver_pool.close()
+                Request.webdriver_pool.close()  # 关闭 webdriver 管理池
 
-            # 关闭打点
-            metrics.close()
+            metrics.close()  # 关闭打点
         else:
             metrics.flush()