All permutations from 2 lists

Larry Martell larry.martell at gmail.com
Wed Mar 2 17:46:49 EST 2022


On Wed, Mar 2, 2022 at 5:31 PM Joel Goldstick <joel.goldstick at gmail.com> wrote:
>
> On Wed, Mar 2, 2022 at 5:07 PM Larry Martell <larry.martell at gmail.com> wrote:
> >
> > On Wed, Mar 2, 2022 at 5:00 PM Cameron Simpson <cs at cskk.id.au> wrote:
> > >
> > > On 02Mar2022 08:29, Larry Martell <larry.martell at gmail.com> wrote:
> > > >On Tue, Mar 1, 2022 at 7:32 PM Rob Cliffe <rob.cliffe at btinternet.com> wrote:
> > > >> I think itertools.product is what you need.
> > > >> Example program:
> > > >>
> > > >> import itertools
> > > >> opsys = ["Linux","Windows"]
> > > >> region = ["us-east-1", "us-east-2"]
> > > >> print(list(itertools.product(opsys, region)))
> > > >
> > > >This does not work if region = []. I wrote in question that either
> > > >list could be empty.
> > >
> > > What do you want to get if a list is empty? You haven't said. My
> > > personal expectation would be an empty result.
> > >
> > > Alternatively, if you expect an empty list to imply some single default
> > > the the experession:
> > >
> > >     the_list or (the_default,)
> > >
> > > might be of use.
> >
> > I've solved the issue.
> > --
> > https://mail.python.org/mailman/listinfo/python-list
>
> Would you be so kind as to show the results of your solution?

I posted it at 10:49am Eastern time.


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