[p_l]

But Java 1.0 code is still (mostly) compile-able on recent Java versions, not so much with Python where I'd worry about going back 5 years.

[musicale]

Many Python developers and users were burned when the Python project decided to set fire to billions of lines of code.

I have zero trust in Python as far as code longevity is concerned.

[throwawayapples]

More like trillions of lines of code, from probably millions of developers, dating back to the 90's.

"The total code size of Zope 2 and its dependencies has decreased by over 200,000 lines of code as a result." - from the 2013 Zope documentation... how many lines of code was it before then?

Python really burned its bridges. It's shown that it's a toy language now, and demonstrably unfit for any real production-quality projects.

[EdwardDiego]

> how many lines of code was [Zope] before then?

Soooo many. Zope was a very formidable code base to delve into. I was trying to learn it because my company was using Plone, and Zope quickly surfaced through the abstractions.

Zope's codebase might have been more accessible if type annotations were a thing back then. Their implementation of "interfaces" for Python were very interesting back in the Python 2.3 days.

I disagree that Python is a "toy" language now. It started out as one, and has been stumbling awkwardly away from that ever since the mid 2000s - virtualenvs, pip, pyenv, pipenv/poetry, type annotations, mypy etc.

In my entirely unscientific opinion, I think it was Django that started this journey, then of course scikit, numpy leading into pandas etc.

[xapata]

Both NumPy and Django were created in 2005, but Numeric, the ancestor of NumPy, is nearly as old as Python itself, and predates SciPy.

[darthrupert]

Bullshit. 2 => 3 transition was mostly mechanical and programmers who are unable to do it should get better.

I haven't seen py2 code in several years. Granted, I would look away in disgust if I did.

[xapata]

Right right right. I'll let my CTO know.

[xapata]

I wrote code that worked with both interpreters simultaneously for many years. I don't know why you'd worry so much.