save project

diy2.py

@@ -7,10 +7,10 @@ while True:
         print("登录成功!")
         print("登录成功!")
         print("欢迎来到贝尔编程!")
         print("欢迎来到贝尔编程!")
         break
         break
-    if name != username and password != userpassword:
+    elif name != username and password != userpassword:
         print("用户名和密码错误!请重新输入")
         print("用户名和密码错误!请重新输入")
-    if  name != username:
+    elif name != username:
         print("用户名错误!请重新输入")
         print("用户名错误!请重新输入")
         continue
         continue
-    if password != userpassword:
+    elif password != userpassword:
         print("密码错误!请重新输入")
         print("密码错误!请重新输入")
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