text: """Decorators marks that a doctest should be skipped, for both python 2 and 3.
  
  The IPython.testing.decorators module triggers various extra imports, including
  numpy and sympy if they're present. Since this decorator is used in core parts
  of IPython, it's in a separate module so that running IPython doesn't trigger
  those imports."""
  
  #-----------------------------------------------------------------------------
  #  Copyright (C) 2009-2011  The IPython Development Team
  #
  #  Distributed under the terms of the BSD License.  The full license is in
  #  the file COPYING, distributed as part of this software.
  #-----------------------------------------------------------------------------
  
  #-----------------------------------------------------------------------------
  # Imports
  #-----------------------------------------------------------------------------
  
  import sys
  
  #-----------------------------------------------------------------------------
  # Decorators
  #-----------------------------------------------------------------------------
  
  def skip_doctest(f):
      """Decorator - mark a function or method for skipping its doctest.
  
      This decorator allows you to mark a function whose docstring you wish to
      omit from testing, while preserving the docstring for introspection, help,
      etc."""
      f.skip_doctest = True
      return f
  
  
  def skip_doctest_py3(f):
      """Decorator - skip the doctest under Python 3."""
      f.skip_doctest = (sys.version_info[0] >= 3)
      return f
  
  def skip_doctest_py2(f):
      """Decorator - skip the doctest under Python 3."""
      f.skip_doctest = (sys.version_info[0] < 3)
      return f
  