auto save

diy1.py

+import time
+s_time= time.time()
+print("开始",s_time)
 list1 = []
 for a in range(0, 1000):
     for b in range(0, 1000):
         list1.insert(0, 0)
+print(list1)
+end_time=time.time()
+print("结束",end_time)
+r=end_time-s_time
+print("运行",r)
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