save project

diy1.py

+import time
+
+start_time = time.time()
+print('开始时间为：',start_time)
 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)
+end_time = time.time()
+print('结束耗时为：',end_time)
+r = end_time - start_time
+print('总共耗时：',r)