DATETIME Archives - 3 중 2 번째 페이지

[PYTHON/COMMON] datetime 클래스 : ctime 메소드를 사용해 날짜/시간 문자열 구하기

■ datetime 클래스의 ctime 메소드를 사용해 날짜/시간 문자열을 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

datetime1 = datetime.datetime.now()

dateTimeString = datetime1.ctime()

print(dateTimeString)

"""
Sun Sep  4 00:34:11 2022
"""

import datetime

datetime1 = datetime.datetime.now()

dateTimeString = datetime1.ctime()

print(dateTimeString)

"""

Sun Sep 4 00:34:11 2022

"""

[PYTHON/COMMON] datetime 클래스 : isoformat 메소드를 사용해 YYYY-MM-DDTHH:MM:SS.mmmmmm 포맷 날짜/시간 문자열 구하기

■ datetime 클래스의 isoformat 메소드를 사용해 YYYY-MM-DDTHH:MM:SS.mmmmmm 포맷 날짜/시간 문자열을 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

datetime1 = datetime.datetime.now()

dateTimeString = datetime1.isoformat()

print(dateTimeString)

"""
2022-09-03T23:28:36.552747
"""

import datetime

datetime1 = datetime.datetime.now()

dateTimeString = datetime1.isoformat()

print(dateTimeString)

"""

2022-09-03T23:28:36.552747

"""

[PYTHON/COMMON] datetime 클래스 : isocalendar 메소드를 사용해 ISO 날짜 튜플 구하기

■ datetime 클래스의 isocalendar 메소드를 사용해 ISO 날짜 튜플을 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

datetime1 = datetime.datetime.now()

isoTuple = datetime1.isocalendar()

print(isoTuple)

"""
datetime.IsoCalendarDate(year=2022, week=35, weekday=6)
"""

import datetime

datetime1 = datetime.datetime.now()

isoTuple = datetime1.isocalendar()

print(isoTuple)

"""

datetime.IsoCalendarDate(year=2022, week=35, weekday=6)

"""

[PYTHON/COMMON] datetime 클래스 : isoweekday 메소드를 사용해 ISO 요일 구하기

■ datetime 클래스의 isoweekday 메소드를 사용해 ISO 요일을 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

datetime1 = datetime.datetime.now()

weekday1 = datetime1.isoweekday()

print(weekday1)

"""
1 월요일
2 화요일
3 수요일
4 목요일
5 금요일
6 토요일
7 일요일
"""

import datetime

datetime1 = datetime.datetime.now()

weekday1 = datetime1.isoweekday()

print(weekday1)

"""

1 월요일

2 화요일

3 수요일

4 목요일

5 금요일

6 토요일

7 일요일

"""

[PYTHON/COMMON] datetime 클래스 : weekday 메소드를 사용해 요일 구하기

■ datetime 클래스의 weekday 메소드를 사용해 요일을 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

datetime1 = datetime.datetime.now()

weekday1 = datetime1.weekday()

print(weekday1)

"""
0 월요일
1 화요일
2 수요일
3 목요일
4 금요일
5 토요일
6 일요일
"""

import datetime

datetime1 = datetime.datetime.now()

weekday1 = datetime1.weekday()

print(weekday1)

"""

0 월요일

1 화요일

2 수요일

3 목요일

4 금요일

5 토요일

6 일요일

"""

[PYTHON/COMMON] time 클래스 : 객체 생성하기

■ time 클래스를 사용해 객체를 생성하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

time1 = datetime.time(7) # 시간만 입력된 경우

time2 = datetime.time(8, 14, 20, 3000) # 시, 분, 초, 마이크로초

time3 = datetime.time(hour = 3, second = 3) # 명시적으로 인자를 지정한 경우

print(time1)
print(time2)
print(time3)

"""
07:00:00
08:14:20.003000
"""

import datetime

time1 = datetime.time(7) # 시간만 입력된 경우

time2 = datetime.time(8, 14, 20, 3000) # 시, 분, 초, 마이크로초

time3 = datetime.time(hour = 3, second = 3) # 명시적으로 인자를 지정한 경우

print(time1)

print(time2)

print(time3)

"""

07:00:00

08:14:20.003000

"""

[PYTHON/COMMON] datetime 클래스 : now 정적 메소드를 사용해 현재 지역 시간의 datetime 객체 구하기

■ datetime 클래스의 now 정적 메소드를 사용해 현재 지역 시간의 datetime 객체를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

datetime1 = datetime.datetime.now()

print(datetime1)

"""
2022-09-03 22:33:46.770970
"""

import datetime

datetime1 = datetime.datetime.now()

print(datetime1)

"""

2022-09-03 22:33:46.770970

"""

[PYTHON/COMMON] date 클래스 : weekday 메소드를 사용해 요일 구하기

■ date 클래스의 weekday 메소드를 사용해 요일을 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

date1 = datetime.date.today()

weekday1 = date1.weekday()

print(weekday1)

"""
0 월요일
1 화요일
2 수요일
3 목요일
4 금요일
5 토요일
6 일요일
"""

import datetime

date1 = datetime.date.today()

weekday1 = date1.weekday()

print(weekday1)

"""

0 월요일

1 화요일

2 수요일

3 목요일

4 금요일

5 토요일

6 일요일

"""

[PYTHON/COMMON] date 클래스 : toordinal 메소드를 사용해 1년 1월 1일 이후 누적 날짜 수 구하기

■ date 클래스의 toordinal 메소드를 사용해 1년 1월 1일 이후 누적 날짜 수를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

date1 = datetime.date.today()

ordinal1 = date1.toordinal()

print(ordinal1)

"""
738401
"""

import datetime

date1 = datetime.date.today()

ordinal1 = date1.toordinal()

print(ordinal1)

"""

738401

"""

[PYTHON/COMMON] date 클래스 : replace 메소드를 사용해 날짜 변경하기

■ date 클래스의 replace 메소드를 사용해 날짜를 변경하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

date1 = datetime.date.today()

date2 = date1.replace(day = 25)

print(date1)
print(date2)

"""
2022-09-03
2022-09-25
"""

import datetime

date1 = datetime.date.today()

date2 = date1.replace(day = 25)

print(date1)

print(date2)

"""

2022-09-03

2022-09-25

"""

[PYTHON/COMMON] date 클래스 : timetuple 메소드를 사용해 date 객체에서 struct_time 객체 구하기

■ date 클래스의 timetuple 메소드를 사용해 date 객체에서 struct_time 객체를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

date1 = datetime.date.today()

structTime1 = date1.timetuple()

print(structTime1)

"""
time.struct_time(tm_year=2022, tm_mon=9, tm_mday=3, tm_hour=0, tm_min=0, tm_sec=0, tm_wday=5, tm_yday=246, tm_isdst=-1)
"""

import datetime

date1 = datetime.date.today()

structTime1 = date1.timetuple()

print(structTime1)

"""

time.struct_time(tm_year=2022, tm_mon=9, tm_mday=3, tm_hour=0, tm_min=0, tm_sec=0, tm_wday=5, tm_yday=246, tm_isdst=-1)

"""

[PYTHON/COMMON] date 클래스 : today 정적 메소드를 사용해 현재 날짜 date 객체 구하기

■ date 클래스의 today 정적 메소드를 사용해 현재 날짜 date 객체를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

date1 = datetime.date.today()

print(date1)

"""
2022-09-03
"""

import datetime

date1 = datetime.date.today()

print(date1)

"""

2022-09-03

"""

[PYTHON/COMMON] date 클래스 : fromtimestamp 정적 메소드를 사용해 date 객체 구하기

■ date 클래스의 fromtimestamp 정적 메소드를 사용해 date 객체를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime
import time

timestamp = time.time()

date1 = datetime.date.fromtimestamp(timestamp)

print(date1)

"""
2022-09-03
"""

import datetime

import time

timestamp = time.time()

date1 = datetime.date.fromtimestamp(timestamp)

print(date1)

"""

2022-09-03

"""

[PYTHON/COMMON] date 클래스 : 객체 생성하기

■ date 클래스를 사용해 객체를 생성하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

date1 = datetime.date(2022, 9, 3)

print(date1)

"""
2022-09-03
"""

import datetime

date1 = datetime.date(2022, 9, 3)

print(date1)

"""

2022-09-03

"""

[PYTHON/COMMON] 특정 주차(Week Number)의 마지막 날짜 구하기

■ 특정 주차(Week Number)의 마지막 날짜를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

def GetWeekNumberLastDate(year, weekNumber):
    yearFirstDate = datetime.datetime(year, 1, 1)
    currentDate   = yearFirstDate + datetime.timedelta(weeks = weekNumber - 1)
    targetDate    = currentDate - datetime.timedelta(days = currentDate.isoweekday() % 7 - 7)
    return targetDate

if __name__ == "__main__":
    print(GetWeekNumberLastDate(2019, 1)) # 2019-01-06 00:00:00
    print(GetWeekNumberLastDate(2019, 2)) # 2019-01-13 00:00:00
    print(GetWeekNumberLastDate(2019, 3)) # 2019-01-20 00:00:00
    print(GetWeekNumberLastDate(2019, 4)) # 2019-01-27 00:00:00
    print(GetWeekNumberLastDate(2019, 5)) # 2019-02-03 00:00:00
    print(GetWeekNumberLastDate(2019, 6)) # 2019-02-10 00:00:00

import datetime

def GetWeekNumberLastDate(year, weekNumber):

yearFirstDate = datetime.datetime(year, 1, 1)

currentDate = yearFirstDate + datetime.timedelta(weeks = weekNumber - 1)

targetDate = currentDate - datetime.timedelta(days = currentDate.isoweekday() % 7 - 7)

return targetDate

if __name__ == "__main__":

print(GetWeekNumberLastDate(2019, 1)) # 2019-01-06 00:00:00

print(GetWeekNumberLastDate(2019, 2)) # 2019-01-13 00:00:00

print(GetWeekNumberLastDate(2019, 3)) # 2019-01-20 00:00:00

print(GetWeekNumberLastDate(2019, 4)) # 2019-01-27 00:00:00

print(GetWeekNumberLastDate(2019, 5)) # 2019-02-03 00:00:00

print(GetWeekNumberLastDate(2019, 6)) # 2019-02-10 00:00:00

[PYTHON/COMMON] 특정 주차(Week Number)의 첫번째 날짜 구하기

■ 특정 주차(Week Number)의 첫번째 날짜를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

def GetWeekNumberFirstDate(year, weekNumber):
    yearFirstDate = datetime.datetime(year, 1, 1)
    currentDate   = yearFirstDate + datetime.timedelta(weeks = weekNumber - 1)
    targetDate    = currentDate - datetime.timedelta(days = currentDate.isoweekday() % 7 - 1)
    return targetDate

if __name__ == "__main__":
    print(GetWeekNumberFirstDate(2019, 1)) # 2018-12-31 00:00:00
    print(GetWeekNumberFirstDate(2019, 2)) # 2019-01-07 00:00:00
    print(GetWeekNumberFirstDate(2019, 3)) # 2019-01-14 00:00:00
    print(GetWeekNumberFirstDate(2019, 4)) # 2019-01-21 00:00:00
    print(GetWeekNumberFirstDate(2019, 5)) # 2019-01-28 00:00:00
    print(GetWeekNumberFirstDate(2019, 6)) # 2019-02-04 00:00:00

import datetime

def GetWeekNumberFirstDate(year, weekNumber):

yearFirstDate = datetime.datetime(year, 1, 1)

currentDate = yearFirstDate + datetime.timedelta(weeks = weekNumber - 1)

targetDate = currentDate - datetime.timedelta(days = currentDate.isoweekday() % 7 - 1)

return targetDate

if __name__ == "__main__":

print(GetWeekNumberFirstDate(2019, 1)) # 2018-12-31 00:00:00

print(GetWeekNumberFirstDate(2019, 2)) # 2019-01-07 00:00:00

print(GetWeekNumberFirstDate(2019, 3)) # 2019-01-14 00:00:00

print(GetWeekNumberFirstDate(2019, 4)) # 2019-01-21 00:00:00

print(GetWeekNumberFirstDate(2019, 5)) # 2019-01-28 00:00:00

print(GetWeekNumberFirstDate(2019, 6)) # 2019-02-04 00:00:00

[PYTHON/COMMON] 특정일이 속하는 주차(Week Number) 구하기

■ 특정일이 속하는 주차(Week Number)를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

def GetWeekNumber(sourceDate):
    weekNumber = sourceDate.isocalendar()[1]
    return weekNumber

if __name__ == "__main__":
    print(GetWeekNumber(datetime.datetime(2018, 12, 29))) # 52
    print(GetWeekNumber(datetime.datetime(2018, 12, 30))) # 52
    print(GetWeekNumber(datetime.datetime(2018, 12, 31))) # 1
    print(GetWeekNumber(datetime.datetime(2019, 1 , 1 ))) # 1
    print(GetWeekNumber(datetime.datetime(2019, 1 , 7 ))) # 2
    print(GetWeekNumber(datetime.datetime(2019, 1 , 14))) # 3

import datetime

def GetWeekNumber(sourceDate):

weekNumber = sourceDate.isocalendar()[1]

return weekNumber

if __name__ == "__main__":

print(GetWeekNumber(datetime.datetime(2018, 12, 29))) # 52

print(GetWeekNumber(datetime.datetime(2018, 12, 30))) # 52

print(GetWeekNumber(datetime.datetime(2018, 12, 31))) # 1

print(GetWeekNumber(datetime.datetime(2019, 1 , 1 ))) # 1

print(GetWeekNumber(datetime.datetime(2019, 1 , 7 ))) # 2

print(GetWeekNumber(datetime.datetime(2019, 1 , 14))) # 3

[PYTHON/COMMON] 특정일이 속하는 연도(Year)의 마지막 날짜 구하기

■ 특정일이 속하는 연도(Year)의 마지막 날짜를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

def GetYearLastDate(sourceDate):
    targetDate = datetime.datetime(sourceDate.year, 12, 31)
    return targetDate

if __name__ == "__main__":
    print(GetYearLastDate(datetime.datetime(2016, 2 , 16))) # 2016-01-01 00:00:00
    print(GetYearLastDate(datetime.datetime(2019, 11, 16))) # 2019-01-01 00:00:00

import datetime

def GetYearLastDate(sourceDate):

targetDate = datetime.datetime(sourceDate.year, 12, 31)

return targetDate

if __name__ == "__main__":

print(GetYearLastDate(datetime.datetime(2016, 2 , 16))) # 2016-01-01 00:00:00

print(GetYearLastDate(datetime.datetime(2019, 11, 16))) # 2019-01-01 00:00:00

[PYTHON/COMMON] 특정일이 속하는 연도(Year)의 첫번째 날짜 구하기

■ 특정일이 속하는 연도(Year)의 첫번째 날짜를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

def GetYearFirstDate(sourceDate):
    targetDate = datetime.datetime(sourceDate.year, 1, 1)
    return targetDate

if __name__ == "__main__":
    print(GetYearFirstDate(datetime.datetime(2016, 2 , 16))) # 2016-01-01 00:00:00
    print(GetYearFirstDate(datetime.datetime(2019, 11, 16))) # 2019-01-01 00:00:00

import datetime

def GetYearFirstDate(sourceDate):

targetDate = datetime.datetime(sourceDate.year, 1, 1)

return targetDate

if __name__ == "__main__":

print(GetYearFirstDate(datetime.datetime(2016, 2 , 16))) # 2016-01-01 00:00:00

print(GetYearFirstDate(datetime.datetime(2019, 11, 16))) # 2019-01-01 00:00:00

[PYTHON/COMMON] 특정일이 속하는 분기(Quater)의 마지막 날짜 구하기

■ 특정일이 속하는 분기(Quater)의 마지막 날짜를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

def GetQuaterLastDate(sourceDate):
    if sourceDate.month < 4:
        targetMonth = 3
        targetDay   = 31
    elif sourceDate.month < 7:
        targetMonth = 6
        targetDay   = 30
    elif sourceDate.month < 10:
        targetMonth = 9
        targetDay   = 30
    else:
        targetMonth = 12
        targetDay   = 31
    targetDate = datetime.datetime(sourceDate.year, targetMonth, targetDay)
    return targetDate

if __name__ == "__main__":
    print(GetQuaterLastDate(datetime.datetime(2016, 2 , 16))) # 2016-03-31 00:00:00
    print(GetQuaterLastDate(datetime.datetime(2019, 11, 16))) # 2019-12-31 00:00:00

import datetime

def GetQuaterLastDate(sourceDate):

if sourceDate.month < 4:

targetMonth = 3

targetDay = 31

elif sourceDate.month < 7:

targetMonth = 6

targetDay = 30

elif sourceDate.month < 10:

targetMonth = 9

targetDay = 30

else:

targetMonth = 12

targetDay = 31

targetDate = datetime.datetime(sourceDate.year, targetMonth, targetDay)

return targetDate

if __name__ == "__main__":

print(GetQuaterLastDate(datetime.datetime(2016, 2 , 16))) # 2016-03-31 00:00:00

print(GetQuaterLastDate(datetime.datetime(2019, 11, 16))) # 2019-12-31 00:00:00

[PYTHON/COMMON] 특정일이 속하는 분기(Quater)의 첫번째 날짜 구하기

■ 특정일이 속하는 분기(Quater)의 첫번째 날짜를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

def GetQuaterFirstDate(sourceDate):
    if   sourceDate.month < 4  : targetMonth = 1
    elif sourceDate.month < 7  : targetMonth = 4
    elif sourceDate.month < 10 : targetMonth = 7
    else                       : targetMonth = 10
    targetDate = datetime.datetime(sourceDate.year, targetMonth, 1)
    return targetDate

if __name__ == "__main__":
    print(GetQuaterFirstDate(datetime.datetime(2016, 2 , 16))) # 2016-01-01 00:00:00
    print(GetQuaterFirstDate(datetime.datetime(2019, 11, 16))) # 2019-10-01 00:00:00

import datetime

def GetQuaterFirstDate(sourceDate):

if sourceDate.month < 4 : targetMonth = 1

elif sourceDate.month < 7 : targetMonth = 4

elif sourceDate.month < 10 : targetMonth = 7

else : targetMonth = 10

targetDate = datetime.datetime(sourceDate.year, targetMonth, 1)

return targetDate

if __name__ == "__main__":

print(GetQuaterFirstDate(datetime.datetime(2016, 2 , 16))) # 2016-01-01 00:00:00

print(GetQuaterFirstDate(datetime.datetime(2019, 11, 16))) # 2019-10-01 00:00:00

[PYTHON/COMMON] 특정일이 속하는 월(Month)의 첫번째 날짜 구하기

■ 특정일이 속하는 월(Month)의 첫번째 날짜를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

def GetMonthFirstDate(sourceDate):
    targetDate = datetime.datetime(sourceDate.year, sourceDate.month, 1)
    return targetDate

if __name__ == "__main__":
    print(GetMonthFirstDate(datetime.datetime(2016, 2 , 16))) # 2016-02-01 00:00:00
    print(GetMonthFirstDate(datetime.datetime(2019, 11, 16))) # 2019-11-01 00:00:00

import datetime

def GetMonthFirstDate(sourceDate):

targetDate = datetime.datetime(sourceDate.year, sourceDate.month, 1)

return targetDate

if __name__ == "__main__":

print(GetMonthFirstDate(datetime.datetime(2016, 2 , 16))) # 2016-02-01 00:00:00

print(GetMonthFirstDate(datetime.datetime(2019, 11, 16))) # 2019-11-01 00:00:00

[PYTHON/COMMON] 특정일이 속하는 월(Month)의 마지막 날짜 구하기

■ 특정일이 속하는 월(Month)의 마지막 날짜를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

def IsLeapYear(year):
    if year % 4 == 0 and (year % 100 != 0 or year % 400 == 0):
        return True
    else:
        return False

MonthDayCountList = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]

def GetMonthLastDate(sourceDate):
    dayCount = MonthDayCountList[sourceDate.month - 1]
    if sourceDate.month == 2:
        if IsLeapYear(sourceDate.year):
            dayCount += 1
    targetDate = datetime.datetime(sourceDate.year, sourceDate.month, dayCount)
    return targetDate

if __name__ == "__main__":
    print(GetMonthLastDate(datetime.datetime(2016, 2 , 16))) # 2016-02-29 00:00:00
    print(GetMonthLastDate(datetime.datetime(2019, 11, 16))) # 2019-11-30 00:00:00

import datetime

def IsLeapYear(year):

if year % 4 == 0 and (year % 100 != 0 or year % 400 == 0):

return True

else:

return False

MonthDayCountList = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]

def GetMonthLastDate(sourceDate):

dayCount = MonthDayCountList[sourceDate.month - 1]

if sourceDate.month == 2:

if IsLeapYear(sourceDate.year):

dayCount += 1

targetDate = datetime.datetime(sourceDate.year, sourceDate.month, dayCount)

return targetDate

if __name__ == "__main__":

print(GetMonthLastDate(datetime.datetime(2016, 2 , 16))) # 2016-02-29 00:00:00

print(GetMonthLastDate(datetime.datetime(2019, 11, 16))) # 2019-11-30 00:00:00

[PYTHON/COMMON] 특정일이 속하는 주(Week)의 마지막 날짜(일요일) 구하기

■ 특정일이 속하는 주(Week)의 마지막 날짜(일요일)를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

def AddDays(sourceDate, count):
    targetDate = sourceDate + datetime.timedelta(days = count)
    return targetDate

def GetWeekLastDate(sourceDate):
    temporaryDate = datetime.datetime(sourceDate.year, sourceDate.month, sourceDate.day)
    weekDayCount = temporaryDate.weekday()
    targetDate = AddDays(sourceDate, -weekDayCount + 6);
    return targetDate

if __name__ == "__main__":
    print(GetWeekLastDate(datetime.datetime(2016, 2 , 21))) # 2016-02-21 00:00:00
    print(GetWeekLastDate(datetime.datetime(2016, 2 , 22))) # 2016-02-28 00:00:00
    print(GetWeekLastDate(datetime.datetime(2016, 2 , 23))) # 2016-02-28 00:00:00
    print(GetWeekLastDate(datetime.datetime(2016, 2 , 24))) # 2016-02-28 00:00:00
    print(GetWeekLastDate(datetime.datetime(2016, 2 , 25))) # 2016-02-28 00:00:00
    print(GetWeekLastDate(datetime.datetime(2016, 2 , 26))) # 2016-02-28 00:00:00
    print(GetWeekLastDate(datetime.datetime(2016, 2 , 27))) # 2016-02-28 00:00:00
    print(GetWeekLastDate(datetime.datetime(2016, 2 , 28))) # 2016-02-28 00:00:00
    print(GetWeekLastDate(datetime.datetime(2016, 2 , 29))) # 2016-03-06 00:00:00
    print(GetWeekLastDate(datetime.datetime(2016, 3 , 1 ))) # 2016-03-06 00:00:00

    print(GetWeekLastDate(datetime.datetime(2019, 11, 9 ))) # 2019-11-10 00:00:00
    print(GetWeekLastDate(datetime.datetime(2019, 11, 10))) # 2019-11-10 00:00:00
    print(GetWeekLastDate(datetime.datetime(2019, 11, 11))) # 2019-11-17 00:00:00
    print(GetWeekLastDate(datetime.datetime(2019, 11, 12))) # 2019-11-17 00:00:00
    print(GetWeekLastDate(datetime.datetime(2019, 11, 13))) # 2019-11-17 00:00:00
    print(GetWeekLastDate(datetime.datetime(2019, 11, 14))) # 2019-11-17 00:00:00
    print(GetWeekLastDate(datetime.datetime(2019, 11, 15))) # 2019-11-17 00:00:00
    print(GetWeekLastDate(datetime.datetime(2019, 11, 16))) # 2019-11-17 00:00:00
    print(GetWeekLastDate(datetime.datetime(2019, 11, 17))) # 2019-11-17 00:00:00
    print(GetWeekLastDate(datetime.datetime(2019, 11, 18))) # 2019-11-24 00:00:00

import datetime

def AddDays(sourceDate, count):

targetDate = sourceDate + datetime.timedelta(days = count)

return targetDate

def GetWeekLastDate(sourceDate):

temporaryDate = datetime.datetime(sourceDate.year, sourceDate.month, sourceDate.day)

weekDayCount = temporaryDate.weekday()

targetDate = AddDays(sourceDate, -weekDayCount + 6);

return targetDate

if __name__ == "__main__":

print(GetWeekLastDate(datetime.datetime(2016, 2 , 21))) # 2016-02-21 00:00:00

print(GetWeekLastDate(datetime.datetime(2016, 2 , 22))) # 2016-02-28 00:00:00

print(GetWeekLastDate(datetime.datetime(2016, 2 , 23))) # 2016-02-28 00:00:00

print(GetWeekLastDate(datetime.datetime(2016, 2 , 24))) # 2016-02-28 00:00:00

print(GetWeekLastDate(datetime.datetime(2016, 2 , 25))) # 2016-02-28 00:00:00

print(GetWeekLastDate(datetime.datetime(2016, 2 , 26))) # 2016-02-28 00:00:00

print(GetWeekLastDate(datetime.datetime(2016, 2 , 27))) # 2016-02-28 00:00:00

print(GetWeekLastDate(datetime.datetime(2016, 2 , 28))) # 2016-02-28 00:00:00

print(GetWeekLastDate(datetime.datetime(2016, 2 , 29))) # 2016-03-06 00:00:00

print(GetWeekLastDate(datetime.datetime(2016, 3 , 1 ))) # 2016-03-06 00:00:00

print(GetWeekLastDate(datetime.datetime(2019, 11, 9 ))) # 2019-11-10 00:00:00

print(GetWeekLastDate(datetime.datetime(2019, 11, 10))) # 2019-11-10 00:00:00

print(GetWeekLastDate(datetime.datetime(2019, 11, 11))) # 2019-11-17 00:00:00

print(GetWeekLastDate(datetime.datetime(2019, 11, 12))) # 2019-11-17 00:00:00

print(GetWeekLastDate(datetime.datetime(2019, 11, 13))) # 2019-11-17 00:00:00

print(GetWeekLastDate(datetime.datetime(2019, 11, 14))) # 2019-11-17 00:00:00

print(GetWeekLastDate(datetime.datetime(2019, 11, 15))) # 2019-11-17 00:00:00

print(GetWeekLastDate(datetime.datetime(2019, 11, 16))) # 2019-11-17 00:00:00

print(GetWeekLastDate(datetime.datetime(2019, 11, 17))) # 2019-11-17 00:00:00

print(GetWeekLastDate(datetime.datetime(2019, 11, 18))) # 2019-11-24 00:00:00

[PYTHON/COMMON] 특정일이 속하는 주(Week)의 첫번째 날짜(월요일) 구하기

■ 특정일이 속하는 주(Week)의 첫번째 날짜(월요일)를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import datetime

def AddDays(sourceDate, count):
    targetDate = sourceDate + datetime.timedelta(days = count)
    return targetDate

def GetWeekFirstDate(sourceDate):
    temporaryDate = datetime.datetime(sourceDate.year, sourceDate.month, sourceDate.day)
    weekDayCount  = temporaryDate.weekday()
    targetDate    = AddDays(temporaryDate, -weekDayCount);
    return targetDate

if __name__ == "__main__":
    print(GetWeekFirstDate(datetime.datetime(2016, 2 , 21))) # 2016-02-15 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2016, 2 , 22))) # 2016-02-22 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2016, 2 , 23))) # 2016-02-22 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2016, 2 , 24))) # 2016-02-22 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2016, 2 , 25))) # 2016-02-22 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2016, 2 , 26))) # 2016-02-22 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2016, 2 , 27))) # 2016-02-22 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2016, 2 , 28))) # 2016-02-22 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2016, 2 , 29))) # 2016-02-29 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2016, 3 , 1 ))) # 2016-02-29 00:00:00

    print(GetWeekFirstDate(datetime.datetime(2019, 11, 9 ))) # 2019-11-04 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2019, 11, 10))) # 2019-11-04 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2019, 11, 11))) # 2019-11-11 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2019, 11, 12))) # 2019-11-11 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2019, 11, 13))) # 2019-11-11 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2019, 11, 14))) # 2019-11-11 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2019, 11, 15))) # 2019-11-11 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2019, 11, 16))) # 2019-11-11 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2019, 11, 17))) # 2019-11-11 00:00:00
    print(GetWeekFirstDate(datetime.datetime(2019, 11, 18))) # 2019-11-18 00:00:00

import datetime

def AddDays(sourceDate, count):

targetDate = sourceDate + datetime.timedelta(days = count)

return targetDate

def GetWeekFirstDate(sourceDate):

temporaryDate = datetime.datetime(sourceDate.year, sourceDate.month, sourceDate.day)

weekDayCount = temporaryDate.weekday()

targetDate = AddDays(temporaryDate, -weekDayCount);

return targetDate

if __name__ == "__main__":

print(GetWeekFirstDate(datetime.datetime(2016, 2 , 21))) # 2016-02-15 00:00:00

print(GetWeekFirstDate(datetime.datetime(2016, 2 , 22))) # 2016-02-22 00:00:00

print(GetWeekFirstDate(datetime.datetime(2016, 2 , 23))) # 2016-02-22 00:00:00

print(GetWeekFirstDate(datetime.datetime(2016, 2 , 24))) # 2016-02-22 00:00:00

print(GetWeekFirstDate(datetime.datetime(2016, 2 , 25))) # 2016-02-22 00:00:00

print(GetWeekFirstDate(datetime.datetime(2016, 2 , 26))) # 2016-02-22 00:00:00

print(GetWeekFirstDate(datetime.datetime(2016, 2 , 27))) # 2016-02-22 00:00:00

print(GetWeekFirstDate(datetime.datetime(2016, 2 , 28))) # 2016-02-22 00:00:00

print(GetWeekFirstDate(datetime.datetime(2016, 2 , 29))) # 2016-02-29 00:00:00

print(GetWeekFirstDate(datetime.datetime(2016, 3 , 1 ))) # 2016-02-29 00:00:00

print(GetWeekFirstDate(datetime.datetime(2019, 11, 9 ))) # 2019-11-04 00:00:00

print(GetWeekFirstDate(datetime.datetime(2019, 11, 10))) # 2019-11-04 00:00:00

print(GetWeekFirstDate(datetime.datetime(2019, 11, 11))) # 2019-11-11 00:00:00

print(GetWeekFirstDate(datetime.datetime(2019, 11, 12))) # 2019-11-11 00:00:00

print(GetWeekFirstDate(datetime.datetime(2019, 11, 13))) # 2019-11-11 00:00:00

print(GetWeekFirstDate(datetime.datetime(2019, 11, 14))) # 2019-11-11 00:00:00

print(GetWeekFirstDate(datetime.datetime(2019, 11, 15))) # 2019-11-11 00:00:00

print(GetWeekFirstDate(datetime.datetime(2019, 11, 16))) # 2019-11-11 00:00:00

print(GetWeekFirstDate(datetime.datetime(2019, 11, 17))) # 2019-11-11 00:00:00

print(GetWeekFirstDate(datetime.datetime(2019, 11, 18))) # 2019-11-18 00:00:00