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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+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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