save project

diy1.py

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