I'm trying to find the cleanest/most pythonic way of evaluating if "now" is between two times; However; the Start/End times may, or may not, fall across a day boundary- for example (just using simple examples):
onhour=23
onmin=30
offhour=4
offmin=15
timenow = datetime.datetime.now().time()
Doing a straight if START < NOW < END
scenario won't work for this!
What I have currently is some code which evaluates if it's currently "NightTime", which looks like this:
def check_time(timenow, onhour, onmin, offhour, offmin, verbose):
now = datetime.datetime.now()
now_time = now.time()
# If we're actually scheduling at night:
if int(offhour) < int(onhour):
# Check to see if we're in daylight times (ie. off schedule)
if datetime.time(int(offhour),int(offmin)) <= now_time <= datetime.time(int(onhour),int(onmin)):
if verbose == True:
print("Day Time detected.")
return False
else:
if verbose == True:
print("Night Time detected.")
return True
else:
if datetime.time(int(onhour),int(onmin)) <= now_time <= datetime.time(int(offhour),int(offmin)):
if verbose == True:
print("Night Time detected.")
return True
else:
if verbose == True:
print("Day Time detected.")
return False
Apologies if the title doesn't sound like anything new, but having reviewed a few existing answers for similar problems such as:
I noticed that these don't seem to account for instances where the Start and End times occur over a day boundary.
In addition to this; any ideas surrounding adding Day based scheduling would be quite useful too! ie. "for Mon - Fri, turn on at 23:00, off a 04:00" - but managing on and off for a day either side (else; something will be turned on, on Friday, but not be turned off on the Saturday-- and yet, including Saturday means it gets turned back on again at 23!...)
I've considered doing a simple "Turn on at X, sleep for Y" to get around this... but if the script is started up during an "On" cycle, it won't be initiated until the next run... But it seems like the simplest option! :)
I'm hoping there's some sort of awesome module that does all this... :D
Compatibility of Python2.7 - 3.2 is pretty important to me too!
Therefore, you can use the expression start <= current <= end to check if a current time falls into the interval [start, end] when assuming that start , end , and current are datetime objects.
%%time is a magic command. It's a part of IPython. %%time prints the wall time for the entire cell whereas %time gives you the time for first line only. Using %%time or %time prints 2 values: CPU Times.
Kevron's post actually helped solve my issue. My requirement was slightly different where I was passing strings. My version looks like this:
def is_hour_between(start, end):
# Time Now
now = datetime.datetime.now().time()
# Format the datetime string
time_format = '%Y-%m-%d %H:%M:%S'
# Convert the start and end datetime to just time
start = datetime.datetime.strptime(start, time_format).time()
end = datetime.datetime.strptime(end, time_format).time()
is_between = False
is_between |= start <= now <= end
is_between |= end <= start and (start <= now or now <= end)
return is_between
check = is_hour_between('2021-04-07 08:30:00', '2021-04-07 04:29:00') #spans to the next day
print("time check", check) # result = True
Hope this helps someone struggling with string times.
To find out whether a given time (no date) is in between given start, end times (the end is not included):
def in_between(now, start, end):
if start <= end:
return start <= now < end
else: # over midnight e.g., 23:30-04:15
return start <= now or now < end
Example:
from datetime import datetime, time
print("night" if in_between(datetime.now().time(), time(23), time(4)) else "day")
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With