save project

diy1.py

+import time
+start = time.time()
+print('开始时间', start)
 list1 = []
 for a in range(0, 1000):
     for b in range(0, 1000):
-        list1.insert(0, 0)
\ No newline at end of file
+        list1.insert(-1, 0)
+end = time.time()
+print('结束时间', start)
+
+sten = start - end
+print('总耗时', sten)