save project

diy2.py

-username = "python"
-userpassword = "123456"
 while True:
-    name = input("请输入用户名:")
-    password = input("请输入密码:")
-    if name == username and password == userpassword:
-        print("登录成功!")
-    print("用户名和密码错误!请重新输入")
-print("欢迎来到贝尔编程!")
+    name=input("请输入用户账号：")
+    password=input("请输入用户密码：")
+    # 如果用户输入的账号、密码正确，提示登陆成功
+    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！")
+        continue
+    if password!=userpassword:
+        print("密码输入错误，请重新输入！")
+print("欢迎来到贝尔编程")