upstream/ipython Files · IPython/nbconvert/utils/base.py

Merge pull request from jdfreder/traitlet_notify_fix...

Merge pull request from jdfreder/traitlet_notify_fix Fix traitlet _notify_trait by-ref issue This fixes a problem with the existing traitlet machinery, where anytrait values get added to the notifiers list every time the _notify_trait function is called. The bug is that each time the traitlet changes, the anytrait callbacks will each be called N times, where N is the number of times the traitlet has been changed (in the current application instance).

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      """Global configuration class."""

      #-----------------------------------------------------------------------------

      # Copyright (c) 2013, the IPython Development Team.

      #

      # Distributed under the terms of the Modified BSD License.

      #

      # The full license is in the file COPYING.txt, distributed with this software.

      #-----------------------------------------------------------------------------

      #-----------------------------------------------------------------------------

      # Imports

      #-----------------------------------------------------------------------------

      from IPython.utils.traitlets import List

      from IPython.config.configurable import LoggingConfigurable

      #-----------------------------------------------------------------------------

      # Classes and functions

      #-----------------------------------------------------------------------------

      class NbConvertBase(LoggingConfigurable):

          """Global configurable class for shared config

          Usefull for display data priority that might be use by many trasnformers

          """

          display_data_priority = List(['html', 'pdf', 'svg', 'latex', 'png', 'jpg', 'jpeg' , 'text'],

                  config=True,

                    help= """

                          An ordered list of prefered output type, the first

                          encounterd will usually be used when converting discarding

                          the others.

                          """

                  )

          def __init__(self, **kw):

              super(NbConvertBase, self).__init__(**kw)

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				"""Global configuration class."""
				#-----------------------------------------------------------------------------
				# Copyright (c) 2013, the IPython Development Team.
				#
				# Distributed under the terms of the Modified BSD License.
				#
				# The full license is in the file COPYING.txt, distributed with this software.
				#-----------------------------------------------------------------------------

				#-----------------------------------------------------------------------------
				# Imports
				#-----------------------------------------------------------------------------

				from IPython.utils.traitlets import List
				from IPython.config.configurable import LoggingConfigurable

				#-----------------------------------------------------------------------------
				# Classes and functions
				#-----------------------------------------------------------------------------

				class NbConvertBase(LoggingConfigurable):
				"""Global configurable class for shared config

				Usefull for display data priority that might be use by many trasnformers
				"""

				display_data_priority = List(['html', 'pdf', 'svg', 'latex', 'png', 'jpg', 'jpeg' , 'text'],
				config=True,
				help= """
				An ordered list of prefered output type, the first
				encounterd will usually be used when converting discarding
				the others.
				"""
				)

				def __init__(self, **kw):
				super(NbConvertBase, self).__init__(**kw)