What I want to do in a python script is sleep a number of seconds until the required time is reached. IE: if runAt setting is 15:20 and current time is 10:20, how can I work out how many seconds to sleep? I'm not sure how to convert 15:20 to a time and current date then deduct the actual time to get the seconds.
8 Answers
Using timedelta object is the way to go. Below is the example that worked for me and can easily be adjusted to any other time:
import datetime, time
today = datetime.datetime.now()
sleep = (datetime.datetime(today.year, today.month, today.day, 15, 20, 0) - today).seconds
print('Waiting for ' + str(datetime.timedelta(seconds=sleep)))
time.sleep(sleep)
Take into consideration that if 15:20 has already passed, this substraction will still work and will wait till the next occurrence of 15:20, because in such situations timedelta returns a negative number of days. It's 16:15 as I'm running my code:
print(datetime.datetime(today.year, today.month, today.day, 15, 20, 0) - today)
>>>-1 day, 23:05:00.176033
Using both arrow and pause:
maintenance = arrow.now()
EndAt = maintenance.replace(hour = 17, minute = 6, second = 0)
print(maintenance,': Maintenance in progress. Pausing until :',EndAt)
pause.until(EndAt.naive)
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