simple Day/Night detection in Python

day-night-detection.py

#!/usr/bin/python
# -- coding: utf-8 --

'''
  simple Day/Night detection in Python
  require pyephem https://pypi.python.org/pypi/pyephem/
'''

import ephem
import time

run = True

def main():
  home        = ephem.Observer()  
  home.lat    = '47.17'           # str() Latitude
  home.lon    = '7.37'            # str() Longitude

  while run:
    
    next_sunrise    = home.next_rising(ephem.Sun()).datetime()
    next_sunset     = home.next_setting(ephem.Sun()).datetime()
    
    if next_sunset < next_sunrise:
        print("It's day")
    else:
        print("It's night")
        
    time.sleep(2)

      
if __name__ == "__main__":
  try:
      main()
  except KeyboardInterrupt:
      print '...stopped!'

Ganz wichtig ist die Koordinaten in Strings zu packen. Sonst erscheinen Meldungen wie diese:

'Sun' is still above the horizon at 2017/5/5 19:47:34
'Sun' transits below the horizon at 2017/5/6 07:47:32

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