code: def __select_nearest_ws(xmldata, latitude, longitude):
      
      log.debug("__select_nearest_ws: latitude: %s, longitude: %s",
                latitude, longitude)
      dist = 0
      dist2 = 0
      loc_data = None
  
      try:
          ws_xml = xmldata[__BRWEERGEGEVENS][__BRACTUEELWEER]
          ws_xml = ws_xml[__BRWEERSTATIONS][__BRWEERSTATION]
      except (KeyError, TypeError):
          log.warning("Missing section in Buienradar xmldata (%s)."
                      "Can happen 00:00-01:00 CE(S)T",
                      __BRWEERSTATION)
          return None
  
      for wstation in ws_xml:
          dist2 = __get_ws_distance(wstation, latitude, longitude)
  
          if dist2 is not None:
              if ((loc_data is None) or (dist2 < dist)):
                  dist = dist2
                  loc_data = wstation
  
      if loc_data is None:
          log.warning("No weatherstation selected; aborting...")
          return None
      else:
          try:
              log.debug("Selected weatherstation: code='%s', "
                        "name='%s', lat='%s', lon='%s'.",
                        loc_data[__BRSTATIONCODE],
                        loc_data[__BRSTATIONNAAM][__BRTEXT],
                        loc_data[__BRLAT],
                        loc_data[__BRLON])
          except KeyError:
              log.debug("Selected weatherstation")
          return loc_data
docs: Select the nearest weatherstation.