save project

diy2.py

-username = "python"
-userpassword = "123456"
+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!")
\ No newline at end of file
+    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!')
+    if (name != username and password == userpassword):
+        print('用户名错误')
+    if (name == username and password != userpassword):
+        print('密码错误')
+print('欢迎来到贝尔编程!')
\ No newline at end of file