auto save

diy1.py

+import time
+start_time=time.time()
+print("开始时间为：",start_time)
+
 list1 = []
 for a in range(0, 1000):
     for b in range(0, 1000):
-        list1.insert(0, 0)
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+       list1.insert(0, 0)
+        #list1.append(0)
+
+end_time=time.time()
+print("结束时间为：",end_time)
+
+result = end_time-start_time
+print("总共耗时：",result)
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