auto save

diy1.py

+import time
+x=time.time()
+print("开始时间为：",x)
 list1 = []
 list1 = []
 for a in range(0, 1000):
 for a in range(0, 1000):
     for b in range(0, 1000):
     for b in range(0, 1000):
-        list1.insert(0, 0)
+        list1.append(0)
\ No newline at end of file
+y=time.time()
+print("结束时间为：",y)
+print("花费时间：",y-x)
\ No newline at end of file