[coldtea]

>This assumes the Python version you need is available from your package manager's repo. This won't work if you want a Python version either newer or older than what is available.

And of course you could be working with multiple distros and versions of the same distro, production and dev might be different environment and tons of others concerns. You need something that just works across.

[nightpool]

Surely you just use Docker for production, right?

[nicoburns]

You almost need to use Docker for deploying Python because the tooling is so bad that it's otherwise very difficult to get a reproducible environment. For many other languages the tooling works well enough that there's relatively little advantage to be had from Docker (although you can of course still use it).

[wombatpm]

And how do you know everything is ok when you build your new docker image?