[Python-ideas] Add output() helper function to subprocess module
phd at phdru.name
Thu Apr 4 05:46:32 EDT 2019
On Thu, Apr 04, 2019 at 07:44:29PM +1100, Chris Angelico <rosuav at gmail.com> wrote:
> On Thu, Apr 4, 2019 at 7:12 PM Nathaniel Smith <njs at pobox.com> wrote:
> > On Thu, Apr 4, 2019 at 12:48 AM Greg Ewing <greg.ewing at canterbury.ac.nz> wrote:
> > >
> > > The check_output() function of the subprocess module raises an
> > > exception if the process returns a non-zero exit status. This is
> > > inconvenient for commands such as grep that use the return
> > > status to indicate something other than success or failure.
> > >
> > > The check_call() function has a companion call(), but here is
> > > currently no non-checking companion for check_call(). How
> > > about adding one with a signature such as
> > >
> > > output(args) --> (status, output)
> > Isn't this already available as: run(args, stdout=PIPE)? Is the object
> > to the extra typing, or...?
> Or discoverability. If you want to run a subprocess and catch its
> output, you'll naturally reach for check_output, and it feels clunkier
> to have to use run() instead.
> +1 on adding a nice simple function, although I'm not 100% sold on the
> name "output".
Oleg Broytman https://phdru.name/ phd at phdru.name
Programmers don't die, they just GOSUB without RETURN.
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