[Python-Dev] deprecate commands.getstatus()
titus at caltech.edu
Fri Mar 16 17:37:04 CET 2007
-> > >> What about reimplementing commands.* using subprocess? Or providing a
-> > >> commands.*-compatible interface in the subprocess module?
OK, so as I understand it, the next step would be for me to provide a
patch implementing this, right? Or is this PEP-required (please no...)?
What do people think of this basic interface?
(status, output) = subprocess.get_status_output(cmd)
output = subprocess.get_output(cmd)
Here 'status' is the 'returncode' from subprocess.Popen, and 'output'
would be the combined stdout/stderr. 'commands.getstatus' would be
removed entirely .
This mimics 'commands' fairly closely, while adhering to PEP 8
guidelines; it's a simple API; and it should be dead easy to implement.
It will also have the various advantages people have mentioned:
* better error trapping;
* better post-fork behavior;
* multi-platform support;
If this sort of thing goes in, I guess commands.* would then be
deprecated with a note saying "go look at these similar commands in
An additional function that I would personally like is:
(status, output, errout) = subprocess.get_status_output_err(cmd)
although the name is hideous. I'd like to change 'get_status_output'
to return a triple, but I'm not sure how big a change that would be
relative to the expected behavior from the ancestral commands function.
 As per GvR,
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