tests: introduce 'seq.py' as a portable replacement for 'seq' OS X 10.6.8 doesn't have it, while 10.10 does. I'm not sure when it was added. It may be missing from other platforms as well. This currently doesn't handle the string manipulation options (-f, -s and -w in MinGW anyway), since there is currently no need for it. Since xrange defaults to starting at 0 instead of 1, and treats the end as exclusive instead of inclusive, the args need to be extracted instead of doing: xrange(*[int(a) for a in sys.argv[1:]]) Therefore, the step might as well be added, even though there is no current use.

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#!/usr/bin/env python

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#

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# A portable replacement for 'seq'

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#

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# Usage:

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#   seq STOP              [1, STOP] stepping by 1

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#   seq START STOP        [START, STOP] stepping by 1

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#   seq START STEP STOP   [START, STOP] stepping by STEP

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import sys

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start = 1

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if len(sys.argv) > 2:

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    start = int(sys.argv[1])

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step = 1

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if len(sys.argv) > 3:

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    step = int(sys.argv[2])

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stop = int(sys.argv[-1]) + 1

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for i in xrange(start, stop, step):

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    print i