save project

diy1.py

+Import time
+start_time=time.time()
+print("程序开始时间；",start_time)
 list1 = []
 for a in range(0, 1000):
     for b in range(0, 1000):
         list1.insert(0, 0)
+end_time=time.time()
+print("程序开始时间；",end_time)
+a=end_time-start_time
+print("程序运行时间；",a)
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