Program chaining on Windows

[Chris Angelico]

On Mon, Aug 24, 2020 at 6:39 AM dn via Python-list
<python-list at python.org> wrote:
>
> On 23/08/2020 19:31, Rob Cliffe via Python-list wrote:
> > On WIndows 10, running Python programs in a DOS box, I would like one
> > Python program to chain to another.  I.e. the first program to be
> > replaced by the second (*not* waiting for the second to finish, as with
> > e.g. os.system).  This doesn't seem a lot to ask, but so far I have been
> > unable to so this.  I am using Python 3.8.3.  Some attempts so far (may
> > be nonsensical):
>
> What is the definition of "finish" in the first program?
> Not sure if have understood <<<(*not* waiting for the second to finish,
> as with e.g. os.system)>>>.
> In Python, the easiest way to chain two "modules" is to use import. This
> gives full control to the 'import-er'.
>

With exec, the intention is to *replace* the current program, not to
invoke it and wait till it's done. The current program will not
continue after a successful exec.

ChrisA