Updating mozdownload (excluding tests)

mozdownload/timezones.py

 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 """Module for providing specific timezones"""
 
 from datetime import datetime, timedelta, tzinfo
 
 
 class PacificTimezone(tzinfo):
     """Class to set the timezone to PST/PDT and automatically adjusts
     for daylight saving.
     """
 
     def utcoffset(self, dt):
         return timedelta(hours=-8) + self.dst(dt)
 
-
     def tzname(self, dt):
         return "Pacific"
 
-
     def dst(self, dt):
         # Daylight saving starts on the second Sunday of March at 2AM standard
         dst_start_date = self.first_sunday(dt.year, 3) + timedelta(days=7) \
                                                        + timedelta(hours=2)
         # Daylight saving ends on the first Sunday of November at 2AM standard
         dst_end_date = self.first_sunday(dt.year, 11) + timedelta(hours=2)
 
         if dst_start_date <= dt.replace(tzinfo=None) < dst_end_date:
             return timedelta(hours=1)
         else:
             return timedelta(0)
 
-
     def first_sunday(self, year, month):
         date = datetime(year, month, 1, 0)
         days_until_sunday = 6 - date.weekday()
 
         return date + timedelta(days=days_until_sunday)