This is probably the most common first use case someone has when trying to
use subprocess for the first time and I think it has always been a bit of a
wart that, given all the helpers and wrappers the subprocess module already
has, it lacks one for that very obvious and common need.
Yes, run() cov
The semantics of list operators are congruent, but unintuitive sometimes.
For example, I've fallen over this many times:
>>> truth_matrix = [[False] * n ] * m
It doesn't create what you'd want.
The only safe way I know to creat an NxM matrix is:
>>> truth_matrix = [ [False for _ in range(n) fo
