old_contents: # -*- coding: utf-8 -*-
  """
  Created on Wed Apr 07 23:11:39 2015
  
  @author: Joris Van den Bossche
  """
  from __future__ import print_function
  
  def main():
      import argparse
      parser = argparse.ArgumentParser(
          prog='ircelsos',
          description='Download air quality data from the SOS of IRCEL - CELINE.')
  
      parser.add_argument('pollutant',
                          help='The pollutant')
      parser.add_argument('--station', '-s', nargs=1,
                          help='Station number. If no provided, use all available'
                          ' stations for that pollutant')
      parser.add_argument('--period', '-p', type=str, nargs=2,
                          help='Period of the measurements given as "start stop"')
      args = parser.parse_args()
  
      from .query_ircelsos import query_ircelsos
      from .parser import get_observations, parse_observation
  
      print("SOS of IRCEL - CELINE")
      print("Downloading ...")
  
      pollutant = args.pollutant
      if args.station:
          station = args.station[0]
      else:
          station = None
      response = query_ircelsos(pollutant, station, args.period[0],
                                args.period[1])
      observations = get_observations(response)
      if not observations:
          print('No observations found')
          import sys
          sys.exit()
  
      for obs in observations:
          st_info, raw_data = parse_observation(obs)
  
      filename = '{0}_{1}.csv'.format(pollutant, st_info['name'])
      print("Writing file '{}'".format(filename))
      with open(filename, 'w') as f:
          f.writelines(raw_data.replace(';', '\n'))
  
new_contents: # -*- coding: utf-8 -*-
  """
  Created on Wed Apr 07 23:11:39 2015
  
  @author: Joris Van den Bossche
  """
  from __future__ import print_function
  
  def main():
      import argparse
      parser = argparse.ArgumentParser(
          prog='ircelsos',
          description='Download air quality data from the SOS of IRCEL - CELINE.')
  
      parser.add_argument('pollutant',
                          help='The pollutant')
      parser.add_argument('--station', '-s', nargs=1,
                          help='Station number. If no provided, use all available'
                          ' stations for that pollutant')
      parser.add_argument('--period', '-p', type=str, nargs=2,
                          help='Period of the measurements given as "start stop"')
      args = parser.parse_args()
  
      from .query_ircelsos import query_ircelsos
      from .parser import get_observations, parse_observation
  
      print("SOS of IRCEL - CELINE")
      print("Downloading ...")
  
      pollutant = args.pollutant
      if args.station:
          station = args.station[0]
      else:
          station = None
      response = query_ircelsos(pollutant, station, args.period[0],
                                args.period[1])
      observations = get_observations(response)
      if not observations:
          print('No observations found')
          import sys
          sys.exit()
  
      for obs in observations:
          st_info, raw_data = parse_observation(obs)
  
          filename = '{0}_{1}.csv'.format(pollutant, st_info['name'])
          print("Writing file '{}'".format(filename))
          with open(filename, 'w') as f:
              f.writelines(raw_data.replace(';', '\n'))
  
subject: Fix main: writing of multiple stations if None is specified