pywws.service.metoffice

Upload weather data to UK Met Office “WOW”.

The UK Met Office runs a Weather Observations Website (WOW) that displays readings from amateur and official weather stations. This module uploads data to it from pywws. You can upload “logged” or “live” data (or both). The module ensures there is at least 5 minutes between each reading as required by the API.

• Create account: https://register.metoffice.gov.uk/WaveRegistrationClient/public/newaccount.do?service=weatherobservations

• API: http://wow.metoffice.gov.uk/support/dataformats#automatic

• Additional dependency: http://docs.python-requests.org/

• Example weather.ini configuration:

  [metoffice]
  site id = 12345678
  aws pin = 987654
  
  [logged]
  services = ['metoffice', 'underground']
  
  [live]
  services = ['metoffice', 'underground']
  

Note that a site id allocated since June 2016 will probably look like 6a571450-df53-e611-9401-0003ff5987fd.

Classes

ToService(context[, check_params])

class pywws.service.metoffice.ToService(context, check_params=True)

Bases: pywws.service.CatchupDataService

config = {'aws pin': ('', True, 'siteAuthenticationKey'), 'site id': ('', True, 'siteid')}

fixed_data = {'softwaretype': 'pywws-21.4.0'}

interval = datetime.timedelta(seconds=300)

logger = <Logger pywws.service.metoffice (WARNING)>

service_name = 'metoffice'

template = '\n#live#\n#idx "\'dateutc\' : \'%Y-%m-%d %H:%M:%S\',"#\n#wind_dir "\'winddir\' : \'%.0f\'," "" "winddir_degrees(x)"#\n#wind_ave "\'windspeedmph\': \'%.2f\'," "" "wind_mph(x)"#\n#wind_gust "\'windgustmph\' : \'%.2f\'," "" "wind_mph(x)"#\n#hum_out "\'humidity\' : \'%.d\',"#\n#temp_out "\'tempf\' : \'%.1f\'," "" "temp_f(x)"#\n#rel_pressure "\'baromin\' : \'%.4f\'," "" "pressure_inhg(x)"#\n#calc "rain_inch(self.rain_rate(data))"\n "\'rainin\' : \'%.4f\',"#\n#calc "rain_inch(self.rain_day_local(data))"\n "\'dailyrainin\' : \'%.4f\',"#\n#calc "temp_f(dew_point(data[\'temp_out\'], data[\'hum_out\']))"\n "\'dewptf\' : \'%.1f\',"#\n'

session()

Context manager factory function for a batch of one or more uploads.

This makes it easy to ensure any resources such as an internet connection are properly closed after a batch of uploads. Use the contextlib.contextmanager() decorator when you implement this method.

For a typical example, see the source code of the pywws.service.openweathermap module. If your upload can’t benefit from a session object yield None, as in pywws.service.copy.

rain_rate(data)

rain_day_local(data)

valid_data(data)

upload_data(session, prepared_data={})

Upload one data set to the service.

Every data service class must implement this method.

Parameters:

• session (object) – the object created by session(). This is typically used to communicate with the server and is automatically closed when a batch of uploads has finished.
• prepared_data (dict) – a set of key: value pairs to upload. The keys and values must all be text strings.

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