code: def __init__(self):
      if not has_nose:
          raise ImportError("Need nose for this plugin.")
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  from ..None import cbook
label_desc: Use image node_id 1 to create a new KnownFailure object from inherited base classes: _KnownFailure with example: obj = KnownFailure()