Hello, On Tue, 31 Mar 2020 17:01:19 -0700 Christopher Barker <python...@gmail.com> wrote:
[] > However if we're all wrong, and there would be a demand for such a > "string builder", then why not write one (could be a wrapper around > StringIO if you want), and put it on PyPi, or even just for own lib, > and see how it catches on. > > Have you done that for your own code and found you like it enough to > really want to push this forward? Yes, that was the progressing: I started with optimizing (my own) code naively written with str += approach, and found that conversion to StringIO.write looks "ugly", so I never finished it. Thinking how to make optimization not affect code quality and clarity, I found that += on StringIO is just it. The issue is that my target implementation is Pycopy (https://github.com/pfalcon/pycopy), which is Python subset. I.e., normal direction is *removing* CPython functionality, not adding to it. Given that it seemed both very obvious addition to Python in general, and went against the normal direction for Pycopy, I decided to share this RFC. As I didn't see any points relevant to Pycopy usecase, I indeed decided to proceed. So, BytesIO.__iadd__()/StringsIO.__iadd__ were added in Pycopy release 3.0.7 (https://github.com/pfalcon/pycopy/releases/tag/v3.0.7) and are documented in the docs: https://pycopy.readthedocs.io/en/latest/library/uio.html#uio.BytesIO.__iadd__ I definitely care about both backwards and forward compatibility between Pycopy and CPython (and other Python implementations). The solution to both problems is very simple: all (well, most) of Pycopy modules are namespaced. So, __iadd__ gets added to uio.BytesIO and uio.StringIO. And there's a backport of "uio" module to CPython: https://github.com/pfalcon/pycopy-lib/blob/master/cpython-uio/uio.py And yes, it's on PyPI: $ python3 -m pip install pycopy-cpython-uio ... $ python3 ... >>> import uio >>> buf = uio.StringIO() >>> buf += "foo" >>> buf.getvalue() 'foo' -- Best regards, Paul mailto:pmis...@gmail.com _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/UKP2S7RDINXGHLRMBRW5NOKQHFHKYBKY/ Code of Conduct: http://python.org/psf/codeofconduct/
