On: Migrating to Python 3 with pleasure

[thijsvandien]

It was recently decided that as of 3.7 it will be.

(Source: https://mail.python.org/pipermail/python-dev/2017-December/1...)

[dbcurtis → thijsvandien]

Hmmmmmm.... that makes it hard for other implementations. CPython isn't the whole of the Python world. Requirements like that can be problematic for implementations like Micropython, for instance.

[sametmax → dbcurtis]

They asked people from the Jython, pypy and uPython community if it was ok before doing so.

[jsmeaton → dbcurtis]

The entire reason they decided to make it a standard rather than keep it as an implementation detail is to make things better for users. It’s not about just looking after cpython.

[lozenge → dbcurtis]

I suspect the reasoning was with CPython dominating, people would eventually make this assumption in their code, perhaps unintentionally, and reduce compatibility. Better to make it official.

[crdoconnor → dbcurtis]

The headache that having non-deterministic code causes more than makes up for that.

Among other things this makes writing tests much easier.