save project

day.py

+username="python"
+userpassword="123456"
+while True:
+    name=input("请输入你的账号")
+    password=input("请输入你的密码")
+    if username==name and userword==password:
+        print("登陆成功")
+        break
+    if name != username :
+        print("账号错误，请重新输入。")
+    if password !=userpassword:
+        print("密码错误，请重新输入。")
+        
+print("欢迎你来到编程世界")
\ No newline at end of file