save project

diy2.py

+i=3
+username = "python"
+userpassword = "123456"
+while True:
+    if i>0:
+        name = input("请输入用户名:\n")
+        password = input("请输入密码:\n")
+        
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name != username :
+            print("用户名不存在，请重新输入！")
+            i-=1
+            continue
+        if password != userpassword:
+            print("密码错误，请重新输入")
+            i-=1
+    else: 
+        print("你的账号已锁定，请来我司解锁")
+        exit()
+print("欢迎来到贝尔编程")
\ No newline at end of file