See file parse_comments.py

    parser = ParseComments()
    dirs = ['/repo/github/diaspora/diaspora', '/repo/github/django/django']
    for d in dirs:
        comments = parser.parse_dir(d)
        pprint(comments)

    print 'Statictics\n'
    parser.print_statistics()

Set var ParseComments.collect_statistic = True for collect statistic for file types and parse time

Wikipedia has a good reference on comments