We do have a parser generator in the standard library: https://github.com/python/cpython/tree/master/Lib/lib2to3/pgen2
On Sun, Mar 31, 2019 at 9:17 PM Nam Nguyen <bits...@gmail.com> wrote: > On Sun, Mar 31, 2019 at 12:13 PM David Mertz <me...@gnosis.cx> wrote: > >> I just found this nice summary. It's not complete, but it looks well >> written. https://tomassetti.me/parsing-in-python/ >> >> On Sun, Mar 31, 2019, 3:09 PM David Mertz <me...@gnosis.cx> wrote: >> >>> There are about a half dozen widely used parsing libraries for Python. >>> Each one of them takes a dramatically different approach to the defining a >>> grammar. Each one has been debugged for over a decade. >>> >>> While I can imagine proposing one for inclusion in the standard library, >>> you'd have to choose one (or write a new one) and explain why that one is >>> better for everyone (or at least a better starting point) than all the >>> others are. >>> >> > I'm not at that stage, yet. By the way, it still is not clear to me if you > think having one in the stdlib is desirable. > > >> You're also have to explain why it needs to be in the standard library >>> rather than installed by 'pip install someparser'. >>> >> > Installing a package out of stdlib does not solve the problem that > motivated this thread. The libraries included in the stdlib can't use those > parsers. > > Cheers, > Nam > > >> >>> On Sat, Mar 30, 2019, 1:58 PM Nam Nguyen <bits...@gmail.com> wrote: >>> >>>> Hello list, >>>> >>>> What do you think of a universal parsing library in the stdlib mainly >>>> for use by other libraries in the stdlib? >>>> >>>> Through out the years we have had many issues with protocol parsing. >>>> Some have even introduced security bugs. The main cause of these issues is >>>> the use of simple regular expressions. >>>> >>>> Having a universal parsing library in the stdlib would help cut down >>>> these issues. Such a library should be minimal yet encompassing, and whole >>>> parse trees should be entirely expressible in code. I am thinking of >>>> combinatoric parsing as the main candidate that fits this bill. >>>> >>>> What do you say? >>>> >>>> Thanks! >>>> Nam >>>> _______________________________________________ >>>> Python-ideas mailing list >>>> Python-ideas@python.org >>>> https://mail.python.org/mailman/listinfo/python-ideas >>>> Code of Conduct: http://python.org/psf/codeofconduct/ >>>> >>> _______________________________________________ > Python-ideas mailing list > Python-ideas@python.org > https://mail.python.org/mailman/listinfo/python-ideas > Code of Conduct: http://python.org/psf/codeofconduct/ > -- --Guido van Rossum (python.org/~guido)
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