save project

ui.py

+username="py"
+userpassword="123"
+while True:
+    name=input("输入名字")
+    password=input("输入密码")
+    if name == username and password == userpassword：
+        print("登陆成功")
+        break
+    if name != username:
+        print("用户错误")
+        continue
+    if password != userpassword：
+        print("密码错误")
+print("欢迎")
\ No newline at end of file