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 argparse
  11 import requests
  12 import configparser
  13 import os
  14 import datetime
  15
  16 baseurl = 'http://api.openweathermap.org/data/2.5/weather'
  17 debug = False
  18
  19 def getweather(apikey, cityid):
  20     query = baseurl + '?units=metric&APPID={}&id={}&lang=de'.format(apikey, cityid)
  21     try:
  22         response = requests.get(query)
  23         if response.status_code != 200:
  24             response = 'N/A'
  25             return response
  26         else:
  27             weatherdata = response.json()
  28             return weatherdata
  29     except requests.exceptions.RequestException as error:
  30         print (error)
  31         sys.exit(1)
  32
  33
  34 def fromtimestamp(timestamp, format):
  35     return datetime.datetime.fromtimestamp(timestamp).strftime(format)
  36
  37
  38 # https://stackoverflow.com/questions/7490660/converting-wind-direction-in-angles-to-text-words
  39 def degToCompass(num):
  40     if num is None:
  41         return 'N/A'
  42     val=int((num/22.5)+.5)
  43     arr=["N","NNO","NO","ONO","O","OSO", "SO", "SSO","S","SSW","SW","WSW","W","WNW","NW","NNW"]
  44     return arr[(val % 16)]
  45
  46
  47 def extractweatherdata(w):
  48     data = dict(
  49         datetime = w['dt'],
  50         sunrise = w['sys']['sunrise'],
  51         sunset = w['sys']['sunset'],
  52         temp = w['main']['temp'],
  53         pressure = w['main']['pressure'],
  54         humidity = w['main']['humidity'],
  55         visibility = w['visibility'],
  56         weather = w['weather'][0]['description'],
  57         sky = w['weather'][0]['main'],
  58         windspeed = w['wind']['speed'],
  59         winddegrees = w['wind']['deg'],
  60         cloudiness = w['clouds']['all'],
  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     data['precipitation'] = w['rain']['3h'] if 'rain' in w else 'N/A'
  69
  70     return data
  71
  72
  73 def main(configfile):
  74     config = configparser.ConfigParser()
  75     config.read(configfile)
  76     apikey = config.get('openweathermap', 'apikey');
  77     cityid = config.get('openweathermap', 'cityid');
  78
  79     weather_raw = getweather(apikey, cityid)
  80     if debug:
  81         pprint(weather_raw)
  82     weather = extractweatherdata(weather_raw)
  83     if debug:
  84         pprint(weather)
  85     # TODO:
  86     # write to db
  87     # write to csv
  88
  89     # output like wetter.at.pl
  90     print(
  91         weather['date'] + ';' +
  92         weather['time'] + ';' +
  93         weather['sunrise_t'] + ';' +
  94         weather['sunset_t'] + ';' +
  95         str(weather['temp']) + ';' +
  96         str(weather['precipitation']) + ' mm/h;' +
  97         str(weather['windspeed']) + ' km/h ' + weather['winddirection'] + ';' +
  98         weather['weather'] + ';' +
  99         str(weather['cloudiness'])
 100     )
 101
 102
 103 if __name__ == '__main__':
 104     default_config_file = os.path.expanduser('~/seewasser.ini')
 105     parser = argparse.ArgumentParser(description='Get OpenWeathermap data')
 106     parser.add_argument('--config', default=default_config_file, help='configuration file')
 107     args = parser.parse_args()
 108     main(args.config)