auto save

uu.py

+i=3
+username="d"
+userpassword="123456789"
+while True:
+    if i>0:
+        name=input("请输入用户名")
+        password=input("请输入密码：")
+        i-=1
+        if name==username and password==userpassword:
+            print("登录成功")
+            break
+        if name != userpassword:    
+            print("用户名错误！请重新输入")
+            print("温馨提示：您还有"+str(i)+"次机会")
+            continue
+        if password==userpassword:
+            print("密码错误！请重新输入")
+            print("温馨提示：您还有"+str(i)+"次机会")
+    else:
+        print("你的账户已被锁定，请一个小时再来")
+        exit()           
+print("欢迎来到贝尔编程")  
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