Created
April 27, 2014 07:53
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Python subprocess emulating a filter.
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| infile = open(inputfilename, "r") | |
| outfile = open(outputfilename, "w") | |
| filter1 = subprocess.Popen(commandline1, stdin=infile, stdout=subprocess.PIPE, stderr=None) | |
| filter2 = subprocess.Popen(commandline2, stdin=filter1.stdout, stdout=outfile, stderr=None) | |
| filter1.stdout.close() # required so filter2 can get SIGPIPE, apparently | |
| filter1.wait() | |
| filter2.wait() | |
| infile.close() | |
| outfile.close() |
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