[Python] 현재 날짜, 시간 구하기 (datetime 모듈)

Python datetime 모듈

Available Types

https://docs.python.org/3.6/library/datetime.html

datetime 사용

현재 날짜 가져오기

• datetime. 을 생략하고 싶으면 from datetime import datetime 으로

import datetime
 
datetime.datetime.today()
datetime.datetime.now()
 
print(datetime.datetime.now())  # 2020-01-07 15:40:15.087337
 
now = datetime.datetime.now()
print(now)              # 2020-01-07 15:40:15.087337

 

년, 월, 일, 시, 분, 초

import datetime
 
now = datetime.datetime.now()
 
print(now.year)         # 2020
print(now.month)        # 1
print(now.day)          # 7
print(now.hour)         # 15
print(now.minute)       # 40
print(now.second)	# 15
print(now.microsecond)  # 087337

 

날짜, 시간 연산 : datetime.timedelta(시간 단위=숫자)

• # 시간 단위는 weeks, days, hours, minutes, seconds, milliseconds, microseconds 사용 가능

import datetime
 
now = datetime.datetime.now()
 
print(now + datetime.timedelta(weeks=1))        # 2020-01-14 15:40:15.087337
print(now + datetime.timedelta(days=1))         # 2020-01-08 15:40:15.087337
print(now + datetime.timedelta(hours=5, minutes=10))    # 2020-01-07 20:50:15.087337

 

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지난달 구하기

import datetime
from dateutil.relativedelta import relativedelta
 
now = datetime.datetime.now()
 
last_month = now - relativedelta(months=1)
last_month = last_month.strftime('%Y/%m')

 

시간을 문자열로 (원하는 포맷으로) : strftime()

import datetime
 
now = datetime.datetime.now()
 
print(now.strftime('%Y-%m-%d'))             # 2020-01-07
print(now.strftime('%H:%M:%S'))             # 15:40:15
print(now.strftime('%Y-%m-%d %H:%M:%S'))    # 2020-01-07 15:40:15

 

시간 포맷의 문자열을 시간 형식으로 : strptime()

import datetime
 
now = datetime.datetime.now()
 
print(datetime.datetime.strptime('2020-01-07 15:40:15', '%Y-%m-%d %H:%M:%S'))
# 2020-01-07 15:40:15
 
print(type(datetime.datetime.strptime('2020-01-07 15:40:15', '%Y-%m-%d %H:%M:%S')))
# <class 'datetime.datetime'>

 

요일 구하기

import datetime
 
def what_day_is_today(self):
    now = datetime.datetime.now()
    t = ['월', '화', '수', '목', '금', '토', '일']
    r = datetime.datetime.today().weekday()
    day = str(now.year) + '년 ' + str(now.month) + '월 ' + str(now.day) + '일 ' + t[r] + '요일'
    return day

 

blog_datetime.py

0.00MB