save project

diy1.py

 import time
-
-list1 = []
+start_time = time.time()
+print("开始时间是：",start_time)
+list1 =[]
 for a in range(0, 1000):
     for b in range(0, 1000):
-        list1.insert(0, 0)
\ No newline at end of file
+        list1.append(0)
+end_time = time.time()
+print("结束时间是：",end_time)
+s =end_time - start_time 
+print("用的时间为：",s)
\ No newline at end of file