upstream/ipython Files · IPython/nbconvert/preprocessors/clearoutput.py

avoid race condition when deleting/starting sessions...

avoid race condition when deleting/starting sessions javascript doesn't guarantee the order of AJAX requests, so we give `Session.delete` and `Kernel.kill` a callback signature. Changing the kernel type calls `Notebook.start_kernel`, which terminates the previous session, if defined, before starting the new one. A flag is stored, to prevent multiple simultaneous attempts to start sessions, raising a SessionAlreadyStarting Error, preventing the spec_changed event from firing.

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      """Module containing a preprocessor that removes the outputs from code cells"""

      # Copyright (c) IPython Development Team.

      # Distributed under the terms of the Modified BSD License.

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

      # Imports

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

      from .base import Preprocessor

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

      # Classes

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

      class ClearOutputPreprocessor(Preprocessor):

          """

          Removes the output from all code cells in a notebook.

          """

          def preprocess_cell(self, cell, resources, cell_index):

              """

              Apply a transformation on each cell. See base.py for details.

              """

              if cell.cell_type == 'code':

                  cell.outputs = []

              return cell, resources

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				"""Module containing a preprocessor that removes the outputs from code cells"""

				# Copyright (c) IPython Development Team.
				# Distributed under the terms of the Modified BSD License.

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

				from .base import Preprocessor


				#-----------------------------------------------------------------------------
				# Classes
				#-----------------------------------------------------------------------------
				class ClearOutputPreprocessor(Preprocessor):
				"""
				Removes the output from all code cells in a notebook.
				"""

				def preprocess_cell(self, cell, resources, cell_index):
				"""
				Apply a transformation on each cell. See base.py for details.
				"""
				if cell.cell_type == 'code':
				cell.outputs = []
				return cell, resources