Thanks Victor and Pablo. I will check the discussion of PEP 603. It's a little weird to use the immutables library when it's code in already in CPython but I'm glad it's an option.
Kai On Fri, Apr 1, 2022 at 6:14 PM Pablo Galindo Salgado <pablog...@gmail.com> wrote: > You may want to check PEP 603, which more or less proposes this (the > author of the pep is the author of the HAMT code) > check https://peps.python.org/pep-0603/ > > Alternatively, there is already a pypi package with this code: > > https://pypi.org/project/immutables/ > > Regards from cloudy London, > Pablo > > On Fri, 1 Apr 2022, 10:34 zhang kai, <kylerzhan...@gmail.com> wrote: > >> Hi, >> >> HAMT is a very useful immutable mapping type. Currently CPython use it >> internally to implement contextvar. Considering immutable data structure is >> very useful I hope we can make it available to python script(maybe via >> collections module). >> >> Immutable data structures are fundamental parts of our project. Currently >> we use a full-featured python immutable data library called pyrsistent. >> Pyrsistent is very powerful, however the map type in it is implemented in >> python script not in C. It becomes slow when the data set is relatively >> large. >> >> On the other hand, CPython now already has an immutable mapping type in >> it. I think maybe it’s a good idea to make it public? Many projects can >> benefit from it I believe. >> >> Here is a talk given by the author of javascript immutable-js library >> explain why immutable data structures are powerful: >> https://www.youtube.com/watch?v=I7IdS-PbEgI >> >> Pyristent: https://github.com/tobgu/pyrsistent >> >> What do you think? >> >> Cheers, >> Kai >> _______________________________________________ >> Python-Dev mailing list -- python-dev@python.org >> To unsubscribe send an email to python-dev-le...@python.org >> https://mail.python.org/mailman3/lists/python-dev.python.org/ >> Message archived at >> https://mail.python.org/archives/list/python-dev@python.org/message/2WYPX44WBFS2ZMZFNMDFMRPROB7G34JQ/ >> Code of Conduct: http://python.org/psf/codeofconduct/ >> >
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