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:
+        input("名字错误")
+        break
+    if password != userpassword:
+        input("请输入密码:")
+print("欢迎来到bell code")