save project

diy2.py

+l="liboyuan"
+b="123456"
+while True:
+    name=input("请输入用户名：")
+    password=input("请输入密码：")
+    if name == l and password == b:
+        print("登入成功！")
+        break
+    if name !=l:
+        print("用户名错误，请重新输入!")
+    else :
+        print("密码错误，请重新输入!")
+print("欢迎来到贝尔编程!")
+    
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