Create an authors.txt file for migrating from SVN to GIT using svn2git

authors.py

import argparse
import subprocess
import sys

def main():
    '''
        Parse all SVN authors from the repository and append the specified domain 
    '''
    parser = argparse.ArgumentParser(description='Collate all SVN comitters / authors with an email address.')
    parser.add_argument('-domain', metavar='-d', help='e.x. tsgrp.com')
    args = parser.parse_args()
    domain = args.domain
    authors_file = open('authors.txt', 'w')
    proc = subprocess.Popen("svn log | grep r[0-9].*$ | awk '{print $3}' | sort | uniq", shell=True, stdout=subprocess.PIPE)
    template = '{author} = {author} <{author}@{domain}>\n'
    authors = author=proc.stdout.read().splitlines()
    for author in authors:
        # encode the bytes as UTF-8
        author = str(author, 'utf-8')
        if author is '':
           continue 
        print(template.format(author=author, domain=domain))
        authors_file.write(template.format(author=author, domain=domain))
    authors_file.close()

if __name__ == '__main__':
    main()