save project

diy2.py

+i=3
+username = " "
+userpassword = "1234"
+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 != username:
+            print("用户名错误")
+            print('温馨提示:你还有'+str(i)+'次机会')
+            continue
+        if password != userpassword:
+            print("请先输入正确的密码")
+            
+    else:
+        print('你的账号已被锁定！')
+        exit()
+print("欢迎登陆贝尔编程！")
+