upstream/ipython Files · IPython/html/widgets/widget_bool.py

Shut down kernels in parallel...

Shut down kernels in parallel When stopping the notebook server, it currently sends a shutdown request to each kernel and then waits for the process to finish. This can be slow if you have several kernels running. This makes it issues all the shutdown requests before waiting on the processes, so shutdown happens in parallel. KernelManager (and MultiKernelManager) gain three new public API methods to allow this: * request_shutdown (promoted from a private method) * wait_shutdown (refactored out of shutdown_kernel) * cleanup (refactored out of shutdown_kernel)

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             widget_bool.py
        
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      """BoolWidget class.  

      Represents a boolean using a widget.

      """

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

      # 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 .widget import DOMWidget

      from IPython.utils.traitlets import Unicode, Bool

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

      # Classes

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

      class _BoolWidget(DOMWidget):

          value = Bool(False, help="Bool value", sync=True)

          description = Unicode('', help="Description of the boolean (label).", sync=True) 

          disabled = Bool(False, help="Enable or disable user changes.", sync=True)

      class CheckboxWidget(_BoolWidget):

          _view_name = Unicode('CheckboxView', sync=True)

      class ToggleButtonWidget(_BoolWidget):

          _view_name = Unicode('ToggleButtonView', sync=True)

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				"""BoolWidget class.

				Represents a boolean using a widget.
				"""
				#-----------------------------------------------------------------------------
				# 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 .widget import DOMWidget
				from IPython.utils.traitlets import Unicode, Bool

				#-----------------------------------------------------------------------------
				# Classes
				#-----------------------------------------------------------------------------
				class _BoolWidget(DOMWidget):
				value = Bool(False, help="Bool value", sync=True)
				description = Unicode('', help="Description of the boolean (label).", sync=True)
				disabled = Bool(False, help="Enable or disable user changes.", sync=True)


				class CheckboxWidget(_BoolWidget):
				_view_name = Unicode('CheckboxView', sync=True)


				class ToggleButtonWidget(_BoolWidget):
				_view_name = Unicode('ToggleButtonView', sync=True)