save project

diy2.py

 username = 'python'
 userpassword = "123456"
 while True:
-    a=input('输入账号:')
-    b=input('输入密码:')
+    username=input('输入账号:')
+    userpassword=input('输入密码:')
     if username==a and userpassword==b:
         input("登录成功:")
         break
-    print("用户名或密码错误!请重新输入")
-print("欢迎来到贝尔编程！")
\ No newline at end of file
+    if name != username:
+        print()("用户名错误！请重新输入")
+    if password != userpassword:
+        print()("密码错误!请重新输入")
+print("欢迎来到贝尔编程!:")
\ No newline at end of file