owm.py

   1 #!/usr/bin/python3
   2
   3 # needs ~/seepark.ini with
   4 # [openweathermap]
   5 # apikey=...
   6 # cityid=..
   7 # 3319578 for Obsteig, AT
   8
   9 from pprint import pprint
  10 import requests
  11 import configparser
  12 import os
  13 import datetime
  14
  15 baseurl = 'http://api.openweathermap.org/data/2.5/weather'
  16 debug = False
  17
  18 def getweather(apikey, cityid):
  19     query = baseurl + '?units=metric&APPID={}&id={}&lang=de'.format(apikey, cityid)
  20     try:
  21         response = requests.get(query)
  22         if response.status_code != 200:
  23             response = 'N/A'
  24             return response
  25         else:
  26             weatherdata = response.json()
  27             return weatherdata
  28     except requests.exceptions.RequestException as error:
  29         print (error)
  30         sys.exit(1)
  31
  32
  33 def fromtimestamp(timestamp, format):
  34     return datetime.datetime.fromtimestamp(timestamp).strftime(format)
  35
  36
  37 # https://stackoverflow.com/questions/7490660/converting-wind-direction-in-angles-to-text-words
  38 def degToCompass(num):
  39     if num is None:
  40         return 'N/A'
  41     val=int((num/22.5)+.5)
  42     arr=["N","NNO","NO","ONO","O","OSO", "SO", "SSO","S","SSW","SW","WSW","W","WNW","NW","NNW"]
  43     return arr[(val % 16)]
  44
  45
  46 def extractweatherdata(w):
  47     data = dict(
  48         datetime = w.get('dt'),
  49         sunrise = w.get('sys').get('sunrise'),
  50         sunset = w.get('sys').get('sunset'),
  51         temp = w.get('main').get('temp'),
  52         pressure = w.get('main').get('pressure'),
  53         humidity = w.get('main').get('humidity'),
  54         visibility = w.get('visibility'),
  55         weather=w['weather'][0]['description'],
  56         sky=w['weather'][0]['main'],
  57         windspeed=w.get('wind').get('speed'),
  58         winddegrees=w.get('wind').get('deg'),
  59         cloudiness=w.get('clouds').get('all'),
  60         rain=w.get('rain'),
  61     )
  62
  63     data['sunrise_t'] = fromtimestamp(data['sunrise'], '%H:%M:%S')
  64     data['sunset_t'] = fromtimestamp(data['sunset'], '%H:%M:%S')
  65     data['date'] = fromtimestamp(data['datetime'], '%Y-%m-%d')
  66     data['time'] = fromtimestamp(data['datetime'], '%H:%M:%S')
  67     data['winddirection'] = degToCompass(data['winddegrees'])
  68     if not data['rain'] is None:
  69         data['precipitation']=data['rain'].get('3h')
  70     else:
  71         data['precipitation']='N/A'
  72
  73     return data
  74
  75
  76 def main():
  77     config = configparser.ConfigParser()
  78     config.read(os.path.expanduser('~/seewasser.ini'))
  79     apikey = config.get('openweathermap', 'apikey');
  80     cityid = config.get('openweathermap', 'cityid');
  81
  82     weather_raw = getweather(apikey, cityid)
  83     if debug:
  84         pprint(weather_raw)
  85     weather = extractweatherdata(weather_raw)
  86     if debug:
  87         pprint(weather)
  88     # TODO:
  89     # write to db
  90     # write to csv
  91
  92     # output like wetter.at.pl
  93     print(
  94         weather['date'] + ';' +
  95         weather['time'] + ';' +
  96         weather['sunrise_t'] + ';' +
  97         weather['sunset_t'] + ';' +
  98         str(weather['temp']) + ';' +
  99         str(weather['precipitation']) + ' mm/h;' +
 100         str(weather['windspeed']) + ' km/h ' + weather['winddirection'] + ';' +
 101         weather['weather'] + ';' +
 102         str(weather['cloudiness'])
 103     )
 104
 105
 106 if __name__ == '__main__':
 107     main()