News for hackers. Stuff that matters.

A comment on Pandas dropping Python 2 support. Parent comment

Re:Pandas dropping Python 2 support by orf on Thursday January 03, 2019 @02:25PM (#18818320)
Sacrificing the awesome 3.x features (f-strings, typing, metaclasses, object model improvements) to hold onto a deprecated and soon-to-be obsolete version of Python seems bad to me.

IMO make a clean cut else it will never end.

[ Parent | on HN ]
Re:Pandas dropping Python 2 support by beagle3 on Thursday January 03, 2019 @04:06PM (#18819269)
Python 1 already had metaclasses (I remebmer it as "the Don Beaudry hack" or "the Don Beaudry hook", depended on who you asked)

Are Python 3 metaclasses a significant change?

[0] https://www.python.org/doc/essays/metaclasses/

[ Parent | on HN ]
Re:Pandas dropping Python 2 support by orf on Thursday January 03, 2019 @04:15PM (#18819341)
There are a number of improvements, including how you define them and the things you can do with them. Some of these tie in with other language features, e.g typing.NamedTuple[1].

There is also PEP 487[2], which means you can do more without needing a metaclass.

1. https://docs.python.org/3/library/typing.html#typing.NamedTu...

2. https://www.python.org/dev/peps/pep-0487/

[ Parent | on HN ]