save project

1.py

 username="python"
 username="python"
 userpassword="123456"
 userpassword="123456"
 while True:
 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("登入成功!")
         print("登入成功!")
         break
         break
+    if name != username:
+        print("用户名错误!")
+        continue
+    if password != userpassword:
     print("错误!")
     print("错误!")
 print("欢迎")
 print("欢迎")
\ No newline at end of file