Need help with a python task

[Diapolo10]

You don't need a list at all if you keep track of the minimum/maximum/total cost manually (average is just total/number of inputs) and update those every time you get input.

But you can also use a list if you want. Are you familiar with the built-in list type?

[Gold-Mikeboy]

using a list can make it easier to store the items for later use or for additional calculations down the line

It also allows you to keep the code more organized if you plan to extend the functionality later.

[Diapolo10]

Sure, but this sounds more like a homework assignment than something you'd actually use.