auto save

diy1.py

+i=3
+username = "python"
+userpassword = "123456"
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i=i-1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name != username:
+            print("用户名错误!请重新输入")
+            print("次数还有"+str(i)+"次")
+            continue
+        if password != userpassword:
+            print("用密码错误!请重新输入")
+            print("次数还有"+str(i)+"次")
+    else:
+        print("登录次数已用完")
+        exit(
+            
+        )
+print("欢迎来到贝尔编程!")
\ No newline at end of file

diy4.py

@@ -14,6 +14,7 @@ for i in message:
     d=a+b+c
     d=a+b+c
     key_message=key_message+d
     key_message=key_message+d
 u=list(key_message)
 u=list(key_message)
-i=u.insert(0,y)
-o=" ".join(i)
+index=random.randint(0,len(key_message))
+u.insert(index,y)
+o=" ".join(u)
 print(o)
 print(o)