old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  import argparse
  
  from twd97.converter import towgs84, fromwgs84, presentations
  
  def main():
      parser = argparse.ArgumentParser(description='The TWD97 and WGS84 converter')
      parser.add_argument('-w', help='TWD97 to WGS84, format: E,N', metavar='EAST,NORTH')
      parser.add_argument('-t', help='WGS84 to TWD97, format: lat,lng (DDD.ddddd, DDD°MM\'SSS.SSSSS" or DDD°MMM.MMMMM\')', metavar='lat,lng')
      parser.add_argument('-p', help='presentation for returned WGS84', metavar='presentation', choices=[x[2:] for x in presentations if x[-3:] == 'str'])
      parser.add_argument('-pkm', help='Penghu, Kinmen or Matsu coordinates', action='store_true')
  
      args = parser.parse_args()
  
      if args.w:
          E, N = args.w.split(',')
          lat, lng = towgs84(float(E), float(N), pkm=args.pkm, presentation=args.p)
  
          if args.p:
              print u'%s,%s' % (lat, lng)
          else:
              print u'%f,%f' % (lat, lng)
  
      elif args.t:
          nospaces = args.t.decode('utf-8').replace(' ', '')
          lat, lng = nospaces.split(',')
          E, N = fromwgs84(lat, lng, pkm=args.pkm)
  
          print u'%f,%f' % (E, N)
  
      else:
          parser.print_help()
  
  
  if __name__ == '__main__':
      main()
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  import sys
  import argparse
  
  from twd97.converter import towgs84, fromwgs84, presentations
  
  def main():
      parser = argparse.ArgumentParser(description='The TWD97 and WGS84 converter')
      parser.add_argument('-w', help='TWD97 to WGS84, format: E,N', metavar='EAST,NORTH')
      parser.add_argument('-t', help='WGS84 to TWD97, format: lat,lng (DDD.ddddd, DDD°MM\'SSS.SSSSS" or DDD°MMM.MMMMM\')', metavar='lat,lng')
      parser.add_argument('-p', help='presentation for returned WGS84', metavar='presentation', choices=[x[2:] for x in presentations if x[-3:] == 'str'])
      parser.add_argument('-pkm', help='Penghu, Kinmen or Matsu coordinates', action='store_true')
  
      args = parser.parse_args()
  
      if args.w:
          E, N = args.w.split(',')
          lat, lng = towgs84(float(E), float(N), pkm=args.pkm, presentation=args.p)
  
          if args.p:
              print(u'%s,%s' % (lat, lng))
          else:
              print(u'%f,%f' % (lat, lng))
  
      elif args.t:
          if sys.version < '3':
              nospaces = args.t.decode('utf-8').replace(' ', '')
          else:
              nospaces = args.t.replace(' ', '')
          lat, lng = nospaces.split(',')
          E, N = fromwgs84(lat, lng, pkm=args.pkm)
  
          print(u'%f,%f' % (E, N))
  
      else:
          parser.print_help()
  
  
  if __name__ == '__main__':
      main()
  
subject: Support python3 in twd97conv.py script