auto save

demo.py

+alist = [20, 17, 9, 13, 5, 6]
+#冒泡排序
+for j in range(len(alist)-1):
+    for i in range(len(alist)-1-j):
+        if alist[i] > alist[i+1]:
+            alist[i],alist[i+1]=alist[i+1], alist[i]
+        print(alist)
+

diy2.py

+import time
+
+start_time = time.time()#开始
+
+list1 = []
+for a in range(0, 1000):
+    for b in range(0, 1000):
+        list1.insert(-1, 0)
+
+end_time = time.time() #结束时间
+
+result = end_time-start_time  
+print('程序运行用时是',result)
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