save project

diy2.py

+username = "python"
+userpassword = "123456"
+while True:
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    if name == username and password == userpassword:
+        print("登录成功!")
+        break
+    if name!=username:
+        print("用户名不存在!请重新输入")
+        continue
+    if password != userpassword :
+         print("密码输入有误，请重新输入！")
+print("欢迎来到贝尔编辑器")
+
+