new_contents: #!/usr/bin/env python
  """Convert a master latex file,
  into a single document by including
  automatically all the LaTeX documents
  which are arguments of
  \include or \input
  ignoring any \includeonly
  """
  import sys
  if len(sys.argv)==3:
      masterfile=sys.argv[1]
      flattenfile=sys.argv[2]
  else:
      sys.exit('USAGE: %s masterfile.tex flattenfile.tex' %sys.argv[0])
  
  filetex=open(masterfile,'r')
  texlist=filetex.readlines()
  finaltex=open(flattenfile,'w')
  for i in texlist:
      if i.find(r'\input{')==0 or i.find(r'\include{')==0:
          includetex=open(i.split('{')[-1].split('}')[0]+'.tex','r')
          finaltex.write(includetex.read())
          finaltex.write('\n')
      elif i.find(r'\includeonly{')==0:
          finaltex.write(i.replace(r'\includeonly{',r'%\includeonly{'))
      else:
          finaltex.write(i)
  
  
  filetex.close()
  finaltex.close()
  
subject: Add python script