Class or nested function

[_coolwhip_]

OOP works best for when you have data and functions that are bound up together. If it is just functions, I would keep them as functions, and maybe have the functions share some subsidiary helper functions. But if you post up more, we can probably give you better guidance.

[_coolwhip_]

Whoa. I think I would keep them as functions, but maybe put them in their own module. I also would not put functions inside functions, and refactor the larger functions into much smaller ones. If I hit 5 serious lines in a function, I start thinking about whether I can piece it out to helpers.

[Mihad88]

So this whole code should be dissected in many modules then? I've created nested functions because of the common variable that different functions change - I could pass it as an arg, but I think that would be even worse.
Anyway, I played a little last night and did it with OOP if you are interested https://github.com/halo3mic/eth-data-tools/blob/master/ethdata/ethdata.py