Tools/AutoSheriff/string_helpers.py - Issue 398823008: WIP: Add auto-sheriff.appspot.com code to Blink

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Side by Side Diff: Tools/AutoSheriff/string_helpers.py

Issue 398823008: WIP: Add auto-sheriff.appspot.com code to Blink Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Created 6 years, 5 months ago

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	1 # Copyright 2014 The Chromium Authors. All rights reserved.

	2 # Use of this source code is governed by a BSD-style license that can be

	3 # found in the LICENSE file.

	4

	5 import itertools

	6

	7 # http://stackoverflow.com/questions/9470611/how-to-do-an-inverse-range-i-e-crea te-a-compact-range-based-on-a-set-of-numb/9471386#9471386

	8 def re_range(lst):

	9 def sub(x):

	10 return x[1] - x[0]

	11

	12 ranges = []

	13 for k, iterable in itertools.groupby(enumerate(sorted(lst)), sub):

	14 rng = list(iterable)

	15 if len(rng) == 1:

	16 s = str(rng[0][1])

	17 else:

	18 s = "%s-%s" % (rng[0][1], rng[-1][1])

	19 ranges.append(s)

	20 return ', '.join(ranges)

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