auto save

diy1.py

-list1 = []
-for a in range(0, 1000):
-    for b in range(0, 1000):
-        list1.insert(0, 0)
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+import time
+a=time.time()
+print('开始时间为:',a)
+list = []
+for i in range(0,1000):
+    for j in range(0,1000):
+        list.insert(0,0)
+b = time.time()
+print('结束时间为为:',b)
+c = b-a
+print('消耗时长:',c)
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