def get_first_perek(jd, israel):
jyear = jd.year
jmonth = jd.month
jday = jd.day
pes1 = JDate.create(jyear, 1, 15)
# How many days after the first day of pesach was the first shabbos after pesach
shb1 = (7 if israel else 8) + (6 - pes1.getdow())
# What number shabbos after pesach is the current date
cshb = (1 if (jmonth == 1 and jday == (shb1 + 15)) else int(
(jd.ordinal - (pes1.ordinal + shb1)) / 7) + 1)
prk = cshb % 6
if prk == 0:
prk = 6
# If the second day of Shavuos was on Shabbos, we missed a week.
# The second day of Pesach is always the same day as the first day of Shavuos.
# So if Pesach was on Thursday, Shavuos will be on Friday and Shabbos in Chu"l.
# Pesach can never come out on Friday, so in E. Yisroel Shavuos is never on Shabbos.
if (not israel) and pes1.getdow() == 4 and (jmonth > 3 or
(jmonth == 3 and jday > 6)):
prk = 6 if prk == 1 else prk - 1
# If Tisha B'Av was on Shabbos, we missed a week.
# The first day of Pesach is always the same day of the week as Tisha b'av.
if pes1.getdow() == 6 and (jmonth > 5 or (jmonth == 5 and jday > 9)):
prk = 6 if prk == 1 else prk - 1
return prk
praklist = 4, 5, 6
elif perek1 == 5:
if cshb == 1:
praklist = 5, 6
elif cshb == 2:
praklist = 1, 2
elif cshb == 3:
praklist = 3, 4
elif cshb == 4:
praklist = 5, 6
elif perek1 == 6:
if cshb == 1:
praklist = 6,
elif cshb == 2:
praklist = 1, 2
elif cshb == 3:
praklist = 3, 4
elif cshb == 4:
praklist = 5, 6
return praklist
if __name__ == '__main__':
import jcal.utils as utils
chukas5776 = JDate.create(5776, 4, 10)
prakim = get_pirkeiavos(chukas5776, True)
text = 'Pirkei Avos: ' + ' and '.join(
[utils.to_suffixed(p) + ' Perek' for p in prakim])
print(text)