This was detected by coala, rightfully, as an unused import.
"""
import os
+from os.path import relpath
import sys
from tokenize import generate_tokens, COMMENT, NAME, OP, STRING
-from babel.util import parse_encoding, pathmatch, relpath
+from babel.util import parse_encoding, pathmatch
from babel._compat import PY2, text_type
from textwrap import dedent
import codecs
from datetime import timedelta, tzinfo
import os
-from os.path import relpath
import re
import textwrap
from babel._compat import izip, imap