datetime / time

여기서는 standard library 로 제공되는 datetime 을 사용했지만  arrow 의 사용도 고민해 볼 만하다.

import datetime

now = datetime.datetime.now()
print(now)  # 2022-05-02 14:09:29.165956
print(now.isoformat())  # 2022-05-02T14:09:29.165956
print(now.strftime('%d/%m/%y-%H%M%S%f'))  # 02/05/22-140929165956

today = datetime.date.today()
print(today)  # 2022-05-02
print(today.strftime('%d/%m/%y'))

t = datetime.time(hour=1, minute=10, second=5, microsecond=100)
print(t.isoformat())  # 01:10:05.000100

now = datetime.datetime.now()
d = datetime.timedelta(weeks=1)
print(now - d)  # 1주일 전 시간

####################################################################
import time

time.sleep(2)  # 2초 sleep
print(time.time())  # 1651468537.3310742

import os
import shutil

file_name = 'test.txt'

# 예제: 파일 백업
backup_date = datetime.datetime.now().strftime('%Y_%m_%d_%H_%M_%S')
if os.path.exists(file_name):
    shutil.copy(file_name, f"{file_name}.{backup_date}")