save project

diy2.py

-username = "python"
+username = "SB"
 userpassword = "123456"
 while True:
+    if a>0
     name = input("请输入用户名:")
     password = input("请输入密码:")
-    if name == username and password == userpassword:
+    a-=1
+    if username ==name username and password == userpassword:
         print("登录成功!")
         break
-    if name !=username:
+    elif name !=username:
         print("请输入用户名")
-        continue
-    if password != userpassword:
+        
+    else:
         print("请重新输入密码")
-print("欢迎来到淘宝!")
\ No newline at end of file
+print("欢迎来到SB!")
\ No newline at end of file