auto save

diy1.py

+import time
 list1 = []
-for a in range(0, 1000):
-    for b in range(0, 1000):
-        list1.insert(0, 0)
\ No newline at end of file
+start_time=time.time()
+print('开始时间',start_time)
+for a in range(0, 10):
+    for b in range(0, 10):
+        list1.insert(0, 0)
+end_time=time.time()
+print('结束时间',end_time)
\ No newline at end of file