converting holiday list from syukujitsu.csv to date tsv only this year

conv_holidays_tsv.py

import datetime
import os
mojico=['shift_jis','cp932','utf-8']

myurl='https://www8.cao.go.jp/chosei/shukujitsu/syukujitsu.csv'
fnameL='syukujitsu.csv'
# forlat: Y/M/D,name
if os.path.exists(fnameL):
	with open(fnameL, 'rt',encoding=mojico[0]) as fid:
		txtorg = fid.read()
else:
	import requests
	txtorg = requests.session().get(myurl).text

thisyear = datetime.datetime.now().year
holidaystsv = ''
for oneline in txtorg.split('\n'):
	if str(thisyear) in oneline:
		strdate,holidayname = oneline.split(',')
		holidaystsv += strdate.replace('/','\t') + '\n'

# print(holidaystsv)

fnames='holidaylist_'+str(thisyear)+'.csv'
with open(fnames,'wt') as fid:
	fid.write(holidaystsv)