[Python-Dev] subprocess insufficiently platform-independent? (original) (raw)

Barry Warsaw barry at python.org
Mon Aug 25 19:30:58 CEST 2008


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On Aug 25, 2008, at 1:13 PM, Guido van Rossum wrote:

Several people at Google seem to have independently discovered that despite all of the platform-independent goodness in subprocess.py, you still need to be platform aware. One of my colleagues summarized it like this:

""" Given a straightforward command list like: cmd = 'svn', 'ls', '[http://rietveld.googlecode.com/svn/trunk'] You apparently cannot pass this list to any subprocess function (subprocess.call() or otherwise) with a set of arguments that allow it to "just work" on both Windows and non-Windows systems.

Unless I'm misremembering (I no longer have access to Windows), I
believe that if you use ' '.join(cmd) as the first argument, it will
work cross-platform.

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