Hi Stefan, You are right. I guess you indeed cannot escape the PSF license when using python :).
Thank you, Jakub On Mon, Jul 20, 2026 at 5:20 AM Stefan Behnel via lxml - The Python XML Toolkit <[email protected]> wrote: > Jakub Kulik schrieb am 17.07.26 um 12:09: > > On Mon, May 18, 2026 at 5:59 PM Stefan Behnel wrote: > >> Jakub Kulik schrieb am 14.05.26 um 12:10: > >>> The latest version of lxml introduced _difflib.py, which is taken (as > the > >>> comment on the top suggests) from Python 3.14 sources. The file > mentions > >>> no licensing information, thus appearing BSD Licensed like the rest of > lxml > >>> sources, but since it's from Python, I presume it should be PSF > licensed? > >>> Should the PSF License be mentioned in e.g. LICENSES.txt? > >> > >> Right, I'll add a note. Thanks for mentioning it. > >> > >> Obviously, users of Python cannot practically object to the terms of the > >> PSF-License, so this is mostly cosmetics for completeness… > > > > That makes sense - although what about somebody using e.g. PyPy? That one > > is licensed under MIT and not PSF license. > PyPy copies and reuses the largest part of the CPython stdlib, pretty much > all Python modules, probably also including difflib. > > Stefan > > _______________________________________________ > lxml - The Python XML Toolkit mailing list -- [email protected] > To unsubscribe send an email to [email protected] > https://mail.python.org/mailman3//lists/lxml.python.org > Member address: [email protected] >
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