new_contents: import functools
  import tempfile
  import shutil
  
  class makedirs(object):
      def __init__(self, num):
          self._num = num
  
      def __call__(self, fn):
          @functools.wraps(fn)
          def wrapper(*args, **kwargs):
              def manager():
                  try:
                      dirs = [
                          tempfile.mkdtemp()
                          for i in xrange(self._num)
                          ]
                      extra_args = list(args)
                      extra_args += dirs
                      fn(*extra_args, **kwargs)
                  finally:
                      for dir_ in dirs:
                          try:
                              shutil.rmtree(dir_)
                          except OSError, e:
                              # It's OK if dir doesn't exist
                              if e.errno != 2:
                                  raise
  
              return manager()
          return wrapper
  
subject: Add tempdirs