Good tutorials for currency converter in python?

hey im doing computing at college and i need to do a currency converter for part of my assignment and ive looked on line but i cant find any decent tutorials any help?

Simple thing to make. Find an public Web API that you can use which has all the values of conversion. While converting pull those values from that API, and do the simple math, that's pretty much all there is to it. The only thing you may need to make if you want it to be usable is caching those currency numbers locally, to not pull them for every computation.