--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/scripts/contributors.py	Sun Aug 25 11:35:10 2013 +0300
@@ -0,0 +1,63 @@
+"""
+Get Mercurial history data and output list of contributors with years.
+
+Public domain work by:
+
+  anatoly techtonik <techtonik@gmail.com>
+
+"""
+
+from subprocess import check_output
+
+# --- output settings
+contributors_by_year = True
+years_for_contributors = True
+verbose = True
+# /--
+
+
+if verbose:
+  print("Getting HG log...")
+authorship = check_output('hg log --template "{date(date,\\"%Y\\")},{author}\n"')
+# authorship are strings like
+# 2003,Richard Jones <richard@users.sourceforge.net>
+# ...
+
+if verbose:
+  print("Splitting...")
+# transform to a list of tuples
+authorship = [line.split(',', 1) for line in authorship.splitlines()]
+
+if verbose:
+  print("Sorting...")
+years = {}  # year -> set(author1, author2, ...)
+names = {}  # author -> set(years)
+for year,author in authorship:
+  # years
+  if not year in years:
+    years[year] = set()
+  years[year].add(author)
+  # names
+  if not author in names:
+    names[author] = set()
+  names[author].add(int(year))
+
+
+if contributors_by_year:
+  if verbose:
+    print("Contributors by year...")
+  print('')
+  for year in sorted(years, reverse=True):
+    print(year)
+    for author in sorted(years[year]):
+      print("  " + author)
+  print('')
+
+if years_for_contributors:
+  if verbose:
+    print("Years for each contributor...")
+  print('')
+  for author in sorted(names):
+    years = sorted(names[author])
+    print(years, author)
+  print('')