upstream/ipython Files · IPython/nbformat/v1/nbbase.py

inputhook: disable CTRL+C when a hook is active....

inputhook: disable CTRL+C when a hook is active. On systems with 'readline', it's very likely to intercept a signal during a select() call. The default SIGINT handler will schedule a KeyboardInterrupt exception to be raised as soon as possible. If ctypes is used to install a Python callback for PyOS_InputHook, this will happen as soon as the bytecode execution starts, so even if the first instruction of the callback is a `try: ... except KeyboardInterrupt` clause, it's actually too late. As ctypes doesn't allow a Python callback to raise an exception, this ends up with IPython detecting an internal error... not pretty. We must therefore ignore the SIGINT signals until we are sure the exception handler is active, in the Python callback.

Brian E. Granger - - Load All Authors

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             nbbase.py
        
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      """The basic dict based notebook format.

      Authors:

      * Brian Granger

      """

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

      #  Copyright (C) 2008-2011  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 pprint

      import uuid

      from IPython.utils.ipstruct import Struct

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

      # Code

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

      class NotebookNode(Struct):

          pass

      def from_dict(d):

          if isinstance(d, dict):

              newd = NotebookNode()

              for k,v in d.items():

                  newd[k] = from_dict(v)

              return newd

          elif isinstance(d, (tuple, list)):

              return [from_dict(i) for i in d]

          else:

              return d

      def new_code_cell(code=None, prompt_number=None):

          """Create a new code cell with input and output"""

          cell = NotebookNode()

          cell.cell_type = u'code'

          if code is not None:

              cell.code = unicode(code)

          if prompt_number is not None:

              cell.prompt_number = int(prompt_number)

          return cell

      def new_text_cell(text=None):

          """Create a new text cell."""

          cell = NotebookNode()

          if text is not None:

              cell.text = unicode(text)

          cell.cell_type = u'text'

          return cell

      def new_notebook(cells=None):

          """Create a notebook by name, id and a list of worksheets."""

          nb = NotebookNode()

          if cells is not None:

              nb.cells = cells

          else:

              nb.cells = []

          return nb

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				"""The basic dict based notebook format.

				Authors:

				* Brian Granger
				"""

				#-----------------------------------------------------------------------------
				# Copyright (C) 2008-2011 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 pprint
				import uuid

				from IPython.utils.ipstruct import Struct

				#-----------------------------------------------------------------------------
				# Code
				#-----------------------------------------------------------------------------

				class NotebookNode(Struct):
				pass


				def from_dict(d):
				if isinstance(d, dict):
				newd = NotebookNode()
				for k,v in d.items():
				newd[k] = from_dict(v)
				return newd
				elif isinstance(d, (tuple, list)):
				return [from_dict(i) for i in d]
				else:
				return d


				def new_code_cell(code=None, prompt_number=None):
				"""Create a new code cell with input and output"""
				cell = NotebookNode()
				cell.cell_type = u'code'
				if code is not None:
				cell.code = unicode(code)
				if prompt_number is not None:
				cell.prompt_number = int(prompt_number)
				return cell


				def new_text_cell(text=None):
				"""Create a new text cell."""
				cell = NotebookNode()
				if text is not None:
				cell.text = unicode(text)
				cell.cell_type = u'text'
				return cell


				def new_notebook(cells=None):
				"""Create a notebook by name, id and a list of worksheets."""
				nb = NotebookNode()
				if cells is not None:
				nb.cells = cells
				else:
				nb.cells = []
				return nb