save project

diy2.py

+username = "python"
+userpassword = "123456"
+a = 3
+while True:
+    if a>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        a-=1
+        if name == username and password == userpassword:
+            break
+            print("登录成功!")
+        if name != username:
+            print("用户名错误，请重新输入！")
+            continue
+        if password != userpassword:
+            print("密码错误，请重新输入！")
+    else:
+        print("你的账户已被锁定")
+        exit()
+print("欢迎来到贝尔编程!")
\ No newline at end of file