A query string is something that may or may not be there. In the python world, like independent of a sepe, when you declare a function has a default value, then that barometer automatically is not required. There's an additional case when you want to do additional data valuation specific quary parameters on those specific data that you're receiving. The user provides them in the quary prmaters and pasipa would read that from those quarry prmatives. But in the basic case, it's just like the same way you use for standard en rightly.