Sunrise and Sunset time in Python

Question

I'm currently working on a project that notifies the users when certain activities related to light are triggered. I've done the part related to light. Hence, I need to find an effective way to retrieve sunrise and sunset time in python, since the whole script is written in python. I know there are several libraries out there for other languages, I wonder what the most convenient way is to do this in python.

It will seem pretty much like this, I suppose:

if(sunrise<T<sunset) and (light<threshold):
    notifyUser()

I'd appreciate any help here, have a good one.

Answer 1

Check out astral. Here's a slightly modified example from their docs:

>>> from astral import Astral
>>> city_name = 'London'
>>> a = Astral()
>>> a.solar_depression = 'civil'
>>> city = a[city_name]
>>> sun = city.sun(date=datetime.date(2009, 4, 22), local=True)

>>> if (sun['sunrise'] < T < sun['sunset']) and (light < threshold):
>>>    notifyUser()

If you use something like this example, please remember to change the city_name and date provided to city.sun.

Answer 2

You can also try with suntime. An example from their doc below:

import datetime
from suntime import Sun, SunTimeException

latitude = 51.21
longitude = 21.01

sun = Sun(latitude, longitude)

# Get today's sunrise and sunset in UTC
today_sr = sun.get_sunrise_time()
today_ss = sun.get_sunset_time()
print('Today at Warsaw the sun raised at {} and get down at {} UTC'.
      format(today_sr.strftime('%H:%M'), today_ss.strftime('%H:%M')))

# On a special date in your machine's local time zone
abd = datetime.date(2014, 10, 3)
abd_sr = sun.get_local_sunrise_time(abd)
abd_ss = sun.get_local_sunset_time(abd)
print('On {} the sun at Warsaw raised at {} and get down at {}.'.
      format(abd, abd_sr.strftime('%H:%M'), abd_ss.strftime('%H:%M')))