python - Custom Timer to get the seconds to the next start time/date -


i have project have assigned days of week running, while other days not included should skipped. eg:

days on: mon (0), tues (1), wed (2), thurs (3), fri (4) days off: sat (5), sun (6)

i have settings saved within registry days on, when settings pulled referenced weekday number.

if want put app sleep on fri (4), , have wake on mon (0), how can go doing so? have no way state sure whether days off consistent, might have sun/mon off instead of sat/sun.

ideally need @ current weekday number, see if within list of days on , if not, have calculate number of seconds until next day on begins.

scenarios:

  1. i set script go sleep on friday june 8th, , sat/sun off days, how calculate seconds sleep 2 days starts again on mon 11th?

  2. i set script go sleep on wed june 6th, , need wake on fri june 8th, turn off on friday night have start again on monday morning.

because days on variable, function must able accommodate it; running problems.

any appreciated, big in advance!

check once day - if today not on day, go sleep until tomorrow.

or

use cron (or windows task scheduler) schedule program needed days.

or

import datetime time import sleep  seconds_per_day = 3600 * 24 daily_start_time = datetime.time(8,15)   # 8:15  def seconds(t):     return 3600*t.hour + 60*t.minute + t.second  def now():     t = datetime.datetime.now()     return t.weekday(), seconds(t)  def load_run_days():     # data registry     return [1,1,1,1,1,0,0]  def days_until_next_run(today, run_days=none):     if run_days none:         run_days = load_run_days()     # rotate     run_days = run_days[today+1:] + run_days[:today+1]     # find next on day     days,_on in enumerate(run_days, 1):         if _on:             return days     # no run day found?     raise valueerror("no 'on' days found")  def sleep_until_next_run():     today, elapsed = now()     days_to_wait = days_until_next_run(today)     sleep(-elapsed + days_to_wait*seconds_per_day + seconds(daily_start_time))  def main():     while true:         try:             sleep_until_next_run()         except valueerror:             break          do_my_stuff()  if __name__=="__main__":     main()

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