jalali to gregorian convert

j2g.py

#!/usr/bin/python3

# Jalali to Gregorian convert. cli tool.
# usage: j2g.py 1401 11 12
# to use, first install jdatetime lib using pip:
# pip install jdatetime

import jdatetime as j
from sys import argv
jdate_str = argv[1:4]
jy, jm, jd = map(int, jdate_str)
jdate = j.JalaliToGregorian(jy, jm, jd)
print(jdate.gyear, jdate.gmonth, jdate.gday)