[lang-ref] ( datetime_to_timestamp ) ( python )
def test_datetime_to_timestamp():
# total_seconds()
JST = datetime.timezone(datetime.timedelta(hours=9))
dt = datetime.datetime(2025, 3, 18, 23, 15, 10, 654321, tzinfo=JST)
seconds_from_unix_epoch = (dt - datetime.datetime.fromtimestamp(0, tz=JST)).total_seconds()
assert seconds_from_unix_epoch == 1742307310.654321