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#!/usr/bin/env python
Get a git project's authors (ordered by most contributions).
import re
import subprocess
from operator import itemgetter
re_line = re.compile(r'(\d+)\s+(\d+)\s+[^<]+$')
re_author = re.compile(r'.+<(.+)>$')
def get_authors(exclude_primary_author=True):
git_log = subprocess.Popen(["git", "log", "--format=%aN <%aE>",
"--numstat"], stdout=subprocess.PIPE)
output = git_log.communicate()[0]
authors = {}
author = None
for line in output.splitlines():
match = re_line.match(line)
if not match:
if line:
author = line
authors[author] = authors.get(author, 0) + max([int(num)
for num in match.groups()])
# Combine duplicate authors (by email).
emails = {}
for author, changes in authors.items():
match = re_author.match(author)
if not match:
author_emails =
for email in author_emails.split(','):
if '@' not in email:
if email in emails:
remove_author = emails[email]
if remove_author not in authors:
if changes < authors[remove_author]:
author, remove_author = remove_author, author
authors[author] = authors[author] + authors[remove_author]
del authors[remove_author]
emails[email] = author
# Sort authors list.
list_authors = authors.items()
list_authors.sort(key=itemgetter(1), reverse=True)
total = float(sum(authors.values()))
if exclude_primary_author:
top_author = list_authors.pop(0)
total -= top_author[1]
return [(author, changes, changes / total * 100)
for author, changes in list_authors]
if __name__ == '__main__':
for author, changes, percent in get_authors():
print author
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