save project

diy1.py

+username = "python"
+userpassword= "123456"
+while True:
+    name=input("请输入用户名：")
+    password=input("请输入密码：")
+    if username==name and userpassword==password:
+        print("登录成功")
+        break
+    print("用户名或密码错误！请重新输入")    
+print("欢迎来到贝尔编程")
+
+    
+
+
+