A demonstration I use of an alternate use for a sorting algorithm.

isopen.py

from bisect import bisect_left


periods = [
		# Time, is_open
		('00:00', False),
		('08:30', True),
		('12:00', False),
		('13:15', True),
		('17:30', False),
		('24:00', False),  # For completeness sake.
	]


def is_open(time):
	applicable_period = bisect_left(periods, (time, None)) - 1
	
	return periods[applicable_period][1]


print(is_open('14:22'))  # True  # Pulled from the '13:15' "record".
print(is_open('06:44'))  # False  # Pulled from the '00:00' "record".