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

[avi.e.gross at gmail.com]

Although today you could say POSIX is the reason for many things including
the use of "--" I hesitate to mention I and many others used that convention
long before as a standard part of many UNIX utilities. Like many other such
things, you build things first and by the time you standardize, ...


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From: Python-list <python-list-bounces+avi.e.gross=gmail.com at python.org> On
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Sent: Sunday, January 29, 2023 7:12 AM
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Subject: Re: How to make argparse accept "-4^2+5.3*abs(-2-1)/2" string
argument?

On 2023-01-29 at 16:51:20 +1100,
Cameron Simpson <cs at cskk.id.au> wrote:

> They're unrelated. As others have mentioned, "--" is _extremely_ 
> common; almost _all_ UNIX command like programmes which handle -* 
> style options honour the "--" convention. _argparse_ itself honours 
> that convention, as does getopt etc.

And why do UNIX programs behave this way?

Because POSIX says they should:

    https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap12.html
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