auto save

diy1.py

+import time#导入模块
 list1 = []
 list1 = []
+start_time = time.time()
+print("开始时间是:",start_time)
 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.insert(0, 0)
\ No newline at end of file
+        list1.append(0)
+end_time = time.time()
+print("结束时间是:",end_time)
+
+result = end_time - start_time
+print("总计时间:",result)
+#数值交换
+a = 5 
+c = 3
+a,c = c,a
+print(a,c)