neo_ww_calculator.py

#!/usr/bin/env python3

#
# Copyright (C) 2021 Intel Corporation
#
# SPDX-License-Identifier: MIT
#

importsys

fromdatetimeimportdatetime, timezone

defconvert_ww(epoch):
dt=datetime.fromtimestamp(epoch, timezone.utc)

# get some info from epoch
yr=int(dt.strftime("%y"))
doy=int(dt.strftime("%j"))
# and day of week for Jan 1st
dow1=int(datetime(dt.year, 1, 1).strftime("%w"))

# number of days in a year
_is_leap=yr%400==0or (yr%4==0andyr%100!=0)
_y_days=366if_is_leapelse365

_doy=doy-1+dow1# shift day of year to simulate Jan 1st as Sunday
_ww=int(_doy/7) +1# get workweek
_wd=int(_doy%7) # get days of week
_y_days=_y_days+dow1# adjusted number of days in year
_w_days=_y_days-_doy+_wd# numer of week days days to end of year

if_w_days<7:
# last week has less than 7 days
yr=yr+1
_ww=1

print("{:02d}.{:02d}".format(yr, _ww))
return0

if__name__=='__main__':
sys.exit(convert_ww(int(sys.argv[1])))