[Python-Dev] Pathlib enhancements - acceptable inputs and outputs for fspath and os.fspath() (original) (raw)

Victor Stinner victor.stinner at gmail.com
Wed Apr 13 17:37:33 EDT 2016

Le mercredi 13 avril 2016, Brett Cannon <brett at python.org> a écrit :

All of this is demonstrated in https://gist.github.com/brettcannon/b3719f54715787d54a206bc011869aa1 by the various possibilities. In the end it's not a corner case because the definition of fspath will be such that there's no ambiguity in what os.fspath() will accept and what fspath can return and the code will be written to conform to what the PEP dictates (IOW I'm aware that this needs to be considered in the implementation :) .

I'm not a big fan of a flag parameter to change the return type of a function. Usually, two functions are preferred. In the os module we have getcwd/getcwdb for example. I don't know if it's a good example

Do you know other examples of Python functions taking a (flag) parameter to change the result type?

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