Extract lines from file, add to new files

[Chris Angelico]

On Sat, 13 Jan 2024 at 13:11, Left Right via Python-list
<python-list at python.org> wrote:
>
>  Very few
> languages allow arbitrary complex expressions in the same place they
> allow variable introduction.

What do you mean by this? Most languages I've worked with allow
variables to be initialized with arbitrary expressions, and a lot of
languages allow narrowly-scoped variables.

ChrisA