매시간

import datetime

time.sleep(3600 - datetime.datetime.minute*60 - datetime.datetime.second)

매분

time.sleep(60 - datetime.datetime.second)

시간, 분 계산 → 분으로 변경

start_hour, start_minute, end_hour, end_minute = list(map(int, start.split(':') + end.split(':')))
start = start_hour*60 + start_minute
end = end_hour*60 + end_minute

minute = end - start
# ------- 함수 -----
def minute(start, end):
    start_hour, start_minute, end_hour, end_minute = list(map(int, start.split(':') + end.split(':')))
    start = start_hour*60 + start_minute
    end = end_hour*60 + end_minute

    minute = end - start
    return minute