Coding Portably: add code to deal with OS-specific file opening

[poldrack]

from https://open.substack.com/pub/russpoldrack/p/coding-portably?r=1n86gc&utm_campaign=comment-list-share-cta&utm_medium=web&comments=true&commentId=132446368:

For portability (between different operating systems), it might also be a good idea to mention open(config_file, 'r', encoding='utf-8') and maybe even os.path.join().

really two issues here. one is dealing with different encodings, the other is dealing with paths. Probably worth discussing both os.path.join() and pathlib.Path().

[poldrack]

moved to new repo at https://github.com/BetterCodeBetterScience/book/issues