[lug] Python: Unable to catch subprocess error

[Jed S. Baer]

On Fri, 9 Mar 2018 18:58:18 -0700
Jed S. Baer wrote:

> Hi Folks. Any Python experts around?
> 
> This seems so trivial; I must be missing something really obvious, or
> something explained in a non-obvious section of the docs.

Well, FWIW, this is something both trivial and non-obvious

>     msg_out = subprocess.check_output(rcmd)

Needs to be (rcmd, shell=True) in order for the exeption to behave as
expected.