save project

diy1.py

@@ -9,9 +9,9 @@ while True:
     if username==a and userpassword==b:
         print("登录成功！")
         break
-    if username!=a :
+    if username!=a:
         print("账号错误！请重新输入")
-        continue 
+    if username==a:    
         if userpassword!=b :
             print("密码错误！请重新输入")