upstream/ipython Files · IPython/utils/data.py

Make comm manager (mostly) independent of InteractiveShell...

Make comm manager (mostly) independent of InteractiveShell This makes it possible to use comms from wrapper kernels, without instantiating the full IPython shell machinery. The one remaining place where we need a reference to shell is to fire pre_execute and post_execute hooks (which are needed to get mpl figures right). This is a pure IPythonism, that it should be safe to ignore if shell is not set.

Thomas Kluyver - - Load All Authors

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      # encoding: utf-8

      """Utilities for working with data structures like lists, dicts and tuples.

      """

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

      #  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.

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

      from .py3compat import xrange

      def uniq_stable(elems):

          """uniq_stable(elems) -> list

          Return from an iterable, a list of all the unique elements in the input,

          but maintaining the order in which they first appear.

          Note: All elements in the input must be hashable for this routine

          to work, as it internally uses a set for efficiency reasons.

          """

          seen = set()

          return [x for x in elems if x not in seen and not seen.add(x)]

      def flatten(seq):

          """Flatten a list of lists (NOT recursive, only works for 2d lists)."""

          return [x for subseq in seq for x in subseq]

      def chop(seq, size):

          """Chop a sequence into chunks of the given size."""

          return [seq[i:i+size] for i in xrange(0,len(seq),size)]

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				# encoding: utf-8
				"""Utilities for working with data structures like lists, dicts and tuples.
				"""

				#-----------------------------------------------------------------------------
				# 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.
				#-----------------------------------------------------------------------------

				from .py3compat import xrange

				def uniq_stable(elems):
				"""uniq_stable(elems) -> list

				Return from an iterable, a list of all the unique elements in the input,
				but maintaining the order in which they first appear.

				Note: All elements in the input must be hashable for this routine
				to work, as it internally uses a set for efficiency reasons.
				"""
				seen = set()
				return [x for x in elems if x not in seen and not seen.add(x)]


				def flatten(seq):
				"""Flatten a list of lists (NOT recursive, only works for 2d lists)."""

				return [x for subseq in seq for x in subseq]


				def chop(seq, size):
				"""Chop a sequence into chunks of the given size."""
				return [seq[i:i+size] for i in xrange(0,len(seq),size)]