添加了计时器

app/decorators.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+# -- coding:utf-8 --
+# @Author: markushammered@gmail.com
+# @Development Tool: PyCharm
+# @Create Time: 2022/4/5
+# @File Name: decorators.py
+
+import time
+from functools import wraps
+
+
+def time_it(func):
+    @wraps(func)
+    def wrapper(*args, **kwargs):
+        print('数据库文件开始下载')
+        start = time.time()
+        result = func(*args, **kwargs)
+        end = time.time()
+        print('下载结束, 耗时 {} 秒'.format(round(end - start, 2)))
+        return result
+
+    return wrapper
+
+
+