Get offdays for pharmacies in greece with easter calculation and all the relevant easter adjucted offdays

offdays.py

#!/bin/env -i python

from datetime import *
from dateutil.easter import *
import sys
import json

def get_offdays(year):
    return [
        date(year, 1, 1),
        date(year, 1, 6),
        date(year, 3, 25),
        date(year, 5, 1),
        date(year, 8, 15),
        date(year, 9, 14),
        date(year, 10, 28),
        date(year, 12, 25),
        date(year, 12, 26),
        easter(year, 2),
        easter(year, 2) + timedelta(days=1),
        easter(year, 2) + timedelta(days=50),
        easter(year, 2) - timedelta(days=48) #ka8ara deytera
    ]

if __name__ == '__main__':
    year = int(sys.argv[1])
    offdays = get_offdays(year)
    json.dump([o.isoformat() for o in offdays], sys.stdout)
    sys.stdout.write('\n')