On 22 Apr, 12:52, Harishankar <[EMAIL PROTECTED]> wrote: > > Is there any way to use non-blocking Popen objects using subprocess? and 2 - > is there a way to kill the subprocess in a platform independent manner in a > purely Pythonic way? I thought initially that this problem is simple enough, > but over the last couple of days I've been really struggling to find any > answer. I've been through dozens of mailing list archives in to find a > solution. Unfortunately none of the solutions seem to fit my needs.
If you want some hints about using subprocesses with non-blocking I/O, you might find some in my jailtools and pprocess projects: http://www.python.org/pypi/jailtools http://www.python.org/pypi/pprocess Although these projects involve things which are not exactly cross- platform, the communications mechanisms should be portable, perhaps with a bit of effort (since I don't recall whether the poll library function is available on Windows, so you might have to use the select function instead). It can be awkward sustaining non-blocking communications with processes if they use buffered I/O, and the only way I could make Python-based subprocesses work in jailtools was to invoke them with the unbuffered option (-u). > My only solution seems to be to offer the end user the mencoder command line > and make them execute it manually and be done with it but that seems a rather > weak solution. The subprocess module may be an improvement over the popen2 module and various os module functions, but it's still rather arcane. Paul -- http://mail.python.org/mailman/listinfo/python-list
