save project

diy2.py

@@ -3,12 +3,12 @@ userpassword = "123456"
 while True:
 while True:
     name = input("请输入用户名:")
     name = input("请输入用户名:")
     password = input("请输入密码:")
     password = input("请输入密码:")
-    if name == username and password == userpassword:
+    if name == username :
+        if password == userpassword:
            print("登录成功!")         
            print("登录成功!")         
            break   
            break   
-    if name != username:
-        print("用户名不存在，请重新输入")  
-        continue
-    if password != userpassword:
-        print("密码输入有误，请重新输入")
+        else:
+             print("密码错误")
+    else:
+        print("用户名不存在")   
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
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