new_contents: import locale
  
  from math import factorial as f
  
  
  nice = lambda: locale.format("%d", _, grouping=True)
  
  __all__ = (
      'f',
      'nice',
  )
  
  
  
  """
  # draft
  
  PROBABERRY_LOCALE = 'en'
  
  try:
      locale.setlocale(locale.LC_ALL, PROBABERRY_LOCALE)
  except:
      pass
  
  def nicify_integer(n):
      s = ''
      while n > 0:
          s = str(n % 1000) + s
          n /= 1000
      return s
  
  
  def nice():
      try:
          return locale.format("%d", _, grouping=True)
      except:
          if isinstance(_) in (int, long):
              return nicify_integer(_)
          return _
          
          
  
  """
  
subject: Create main.py