On 5/31/2015 10:15 AM, Nick Coghlan wrote: > The education community started switching a while back - if you watch > Carrie-Anne Philbin's PyCon UK 2014 keynote, one of her requests for > the broader Python community was for everyone else to just catch up > already in order to reduce student's confusion (she phrased it more > politely than that, though). Educators need to tweak examples and > exercises to account for a version switch, but that's substantially > easier than migrating hundreds of thousands or even millions of lines > of production code. There is another somewhat invisible but real aspect of migration that tends to get ignored: the Python embedded in applications. LibreOffice 4.0, for instance, upgraded from 2.6 to 3.3 (around Jan 14 I think). It is currently in lo4dir/program/python-core-3.3.1. I presume unicode everywhere pluse the new-in-3.3 efficient, cross-platform unicode implementation had something to do with this. lo4dir/program/wizards is a package with subpackages and over 100 .py files. There are now perhaps 20 million LO4 users (and indirect 3.3 users) around the world (my guess from Wikipedia article). A few will use the PyUNO bridge for scripting. Installations are from CDs, direct downloads, torrents, and linux distributions, but not from pypi. In a few years, the number might grow to 100 million as more LO3 users upgrade and new users start with LO4. [...] > In terms of reducing *barriers* to adoption, after inviting them to > speak at the 2014 language summit, we spent a fair bit of time with > the Twisted and Mercurial folks over the past year or so working > through "What's still missing from Python 3 for your use cases?", as > Python 3.4 was still missing some features for binary data > manipulation where we'd been a bit too ruthless in pruning back the > binary side of things when deciding what counted as text-only > features, and what was applicable to binary data as well. So 3.5 > brings back binary interpolation, adds a hex() method to bytes, and > adds binary data support directly to a couple of standard library > modules (tempfile, difflib). Perhaps we should investigate whether other apps with embedded but user accessible python has migrated and if not, ask why not (dependencies?) and whether planned. -- Terry Jan Reedy
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