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!")
-        break
-    print("用户名和密码错误!请重新输入")
-print("欢迎来到贝尔编程!")
+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!")
+        break
+        print("用户名和密码错误!请重新输入")
+    if name != username:
\ No newline at end of file
+        print("用户名不存在，请重新输入!")
+    if password != userpassword:
+        print("密码输入有误，请重新输入!")
+print("欢迎来到贝尔编程!")
+
+