Spaces and import fix.

sphinx/builders/gettext.py

@@ -135,6 +135,7 @@ if source_date_epoch is not None:
     timestamp = float(source_date_epoch)
     tzdelta = 0
 
+
 class LocalTimeZone(tzinfo):
 
     def __init__(self, *args, **kw):

sphinx/config.py

@@ -303,7 +303,7 @@ class Config(object):
         # correct values of copyright year that are not coherent with
         # the SOURCE_DATE_EPOCH environment variable:
         if getenv('SOURCE_DATE_EPOCH') is not None:
-            for k in ('copyright','epub_copyright'):
+            for k in ('copyright', 'epub_copyright'):
                 if k in config:
                     config[k] = copyright_year_re.sub('\g<1>%s' % format_date('%Y'),
                                                       config[k])

sphinx/util/i18n.py

@@ -14,7 +14,6 @@ import os
 import re
 import warnings
 from os import path
-from time import gmtime
 from datetime import datetime
 from collections import namedtuple