save project

diy1.py

-list1 = [20,17,9,13,8,6]
+import time
+start_time=time.time()#开始时间
+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)
+end_time=time.time()#结束时间
+print("结束时间为：",end_time)