#python で日付を JST=日本時刻=現地時刻で与えると日の始まりの unixtimstamp を出力する例

[YumaInaura]

• 強引に string の日付を split して replace に与えています

#!/usr/bin/env python3

from datetime import datetime
import pytz, time, os

tz = pytz.timezone('Asia/Tokyo')

date = os.environ.get('DATE')

year = int(date.split('-')[0])
month = int(date.split('-')[1])
day = int(date.split('-')[2])

local_datetime = datetime.now(tz=tz).replace(year=year, month=month, day=day, hour=0, minute=0, second=0, microsecond=0)

unixtimestamp = time.mktime(local_datetime.timetuple())

print(unixtimestamp)

$ DATE=2016-03-02 ./jst-unixtimestamp.py
1456844400.0

$ DATE=2016-03-03 ./jst-unixtimestamp.py
1456930800.0

shellと組み合わせて使ってみる例

$ DATE=$(date --date="1 days ago" +'%Y-%m-%d') ./jst-unixtimestamp.py
1554044400.0

$ DATE=$(date +'%Y-%m-%d') ./jst-unixtimestamp.py
1554130800.0