save project

123.py

-username="123"
-userpassword="12"
+username="1"
+userpassword="1"
+i=3 
 while True:
+    if i>0:
         name=input("输入账号：")
         password=input("输入密码：")
+        i=i-1
         if username==name and userpassword==password:
             print("登录成功！")
             break    
@@ -11,6 +14,9 @@ while True:
             continue
         if userpassword!=password:
             print("密码错误，请重新输入！")
-        
+    else:
+        print("byebye")
+    exit()
+print("欢迎")