new_contents: '''
  Interface with command line platon
  http://aflowlib.org/
  Only tested on Linux
  inspired by Shyue's qhull_caller
  WARNING: you need to have a platon in your path for this to work
  '''
  
  __author__="Geoffroy Hautier"
  __copyright__ = "Copyright 2012, The Materials Project"
  __version__ = "1.0"
  __maintainer__ = "Geoffroy Hautier"
  __email__ = "geoffroy.hautier@uclouvain.be"
  __status__ = "Production"
  __date__ ="$February 24, 2012M$"
  
  import subprocess
  import pymatgen.io.cifio
  import os
  
  
  def run_platon_command(command, structure):
      """
      Helper function for calling platon with different arguments
      I know it's uggly to actually write a file and call platon but I did not manage to make it work in another way
      """
      writer=pymatgen.io.cifio.CifWriter(structure)
      #incommand=str(writer)
      #print incommand
      writer.write_file("/tmp/tmp.cif")
      command.append("/tmp/tmp.cif")
      p = subprocess.Popen(command,shell = False, stdout = subprocess.PIPE, stdin = subprocess.PIPE)
      output = p.communicate()
      os.remove("/tmp/tmp.cif")
      return output
  
  def get_space_group(structure):
      output=run_platon_command(['platon', '-o', '-c'], structure)
      dictio={}
      for line in output[0].split("\n"):
       #   print line
          if(line.find("Space Group")!=-1):
              list_tmp=line.split()
       #       print list_tmp
              for i in range(len(list_tmp)):
                  if(list_tmp[i]=='Group'):
                      dictio['SG_HM']=list_tmp[i+1]
                  if(list_tmp[i]=='No:'):
                      dictio['SG_NB']=list_tmp[i+1]
      return dictio
  
subject: add a module used to call platon (software assigning space groups) on a structure in pymatgen