timezones.py 文件源码

def _detect_timezone_php():
  tomatch = (time.tzname[0], time.timezone, time.daylight)
  now = datetime.datetime.now()

  matches = []
  for tzname in pytz.all_timezones:
    try:
      tz = pytz.timezone(tzname)
    except IOError:
      continue

    try:
      indst = tz.localize(now).timetuple()[-1]

      if tomatch == (tz._tzname, -tz._utcoffset.seconds, indst):
        matches.append(tzname)

    # pylint: disable-msg=W0704
    except AttributeError:
      pass

  if len(matches) > 1:
    warnings.warn("We detected multiple matches for the timezone, choosing "
                  "the first %s. (Matches where %s)" % (matches[0], matches))
    return pytz.timezone(matches[0])