def _nearby_season_month(self, datestr, offset):
date = dt.strptime(datestr, '%Y%m%d')
date = date.replace(day=1)
season_month = date.replace(
month=3 * (date.month // 3 + int(date.month % 3 > 0))) + td(
months=3 * offset)
return season_month.replace(day=monthrange(
season_month.year, season_month.month)[1]).strftime('%Y%m%d')
def __call__(self, parser, namespace, values, option_string=None):
# Convert '3 months' to ('3', ' ', 'months')
split = values.partition(' ')
# Normalize inclusion of 's'. i.e. "month" -> "months"
unit_as_written = split[2]
if unit_as_written[-1] != 's':
unit_as_written = unit_as_written + 's'
# Compute accurate time delta from human expression.
# If argument is "3 months", dict looks like:
# {hours: 0, days: 0, weeks: 0, months: 3, years: 0}
units = {k + 's': int(split[0]) * int(k + 's' == unit_as_written) for k in timeunits}
# The beginning of Git commit history that the user deems important.
user_epoch = datetime.utcfromtimestamp(git.headtime()) - td(**units)
# We cannot go before the beginning of the commit history.
timestamp = max(int(time.mktime(user_epoch.timetuple())), git.inittime())
setattr(namespace, self.dest, timestamp)