How to make argparse accept "-4^2+5.3*abs(-2-1)/2" string argument?

[Chris Angelico]

On Tue, 24 Jan 2023 at 07:47, Cameron Simpson <cs at cskk.id.au> wrote:
>
> But for Jach Feng: the "--" is really expected as something the user
> does when they invoke your programme, _explicitly_ saying that what
> follows from here is not an argument. So the user is expected to type:
>
>      your_script -x -y -- "-4^2+5.3*abs(-2-1)/2"
>
> where there are -x and -y options, then end of options, then an
> argument, which would look like an option if there wasn't the "--"
> argument.

And if you DON'T expect the user to enter the "--", then why use
argparse? You can just check argv directly to get your arguments.

This entire thread is a massive "how can I use X to do Y?" problem.

ChrisA