save project

diy2.py

+username = "python"
+userpassword = "123456"
+i = 3
+while true:
+    i > 3
+        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!")
+            print("欢迎")
+            break
+    if name != username:
+        print("用户名不存在，请重新输入！")
+        comtinue
+    if password != userpassword:
+        print("密码错误，请重新输入！")
+    if i ==0:
+        print("账户已锁定！")
+        exit()
\ No newline at end of file