Google bugspots for Mercurial + python

bugspots.py

from mercurial import ui, hg
import re
import time
import math
import sys

DEBUG = 0
repo = hg.repository(ui.ui(), sys.argv[1])
message_matchers = re.compile('fix(es|ed)?|close(s|d)?', re.IGNORECASE)

fixes = [
    {'message': ctx.description(),
     'date': ctx.date()[0],
     'files':ctx.files()}
    for ctx in [repo.changectx(c) for c in repo.changelog] \
        if message_matchers.match(ctx.description())
]

if DEBUG:
    print fixes

hotspots = {}
first_commit_date = min([fix['date'] for fix in fixes])
for fix in fixes:
    t = 1 - ((time.time() - fix['date']) / (time.time() - first_commit_date))
    for filename in fix['files']:
        if DEBUG:
            print 'tmp:', t, 'now:', time.time(),\
                'date:', fix['date'],\
                'fixes.last.date:', fixes[0]['date'],\
                '1st commit date:', first_commit_date,\
                'file:', filename, 'desc:', fix['message']
        hotspots[filename] = hotspots.get(filename, 0) \
            + 1.0 / (1.0 + math.exp((-12.0 * t) + 12.0))

print ['%s: %.6f' % (k, hotspots[k]) for k in hotspots]

no work on mercurial 2.5 ...