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