upstream/ipython Files · IPython/extensions/cythonmagic.py

Handle kernel messages synchronously...

Handle kernel messages synchronously A problem can happen when two messages come in for different comms, where the second depends on the first (for example, the first might be a message setting the state of a widget, and the second triggering a view creation for the widget). Since comm message queues are independent of each other, the second message could be executed before the first message. This exposes a more fundamental assumption users are likely to have that messages from python are processed synchronously. Thanks to @dmadeka for reporting an error that led to discovering this issue.

Matthias Bussonnier - - Load All Authors

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             cythonmagic.py
        
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      # -*- coding: utf-8 -*-

      """

      The cython magic has been integrated into Cython itself, 

      which is now released in version 0.21.

      cf github `Cython` organisation, `Cython` repo, under the 

      file `Cython/Build/IpythonMagic.py`

      """

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

      # Copyright (C) 2010-2011, 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.

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

      from __future__ import print_function

      import IPython.utils.version as version

      try:

          import Cython

      except:

          Cython = None

      try:

          from Cython.Build.IpythonMagic import CythonMagics

      except :

          pass

      ## still load the magic in IPython 3.x, remove completely in future versions.

      def load_ipython_extension(ip):

          """Load the extension in IPython."""

          print("""The Cython magic has been move to the Cython package, hence """)

          print("""`%load_ext cythonmagic` is deprecated; Please use `%load_ext Cython` instead.""")

          if Cython is None or not version.check_version(Cython.__version__, "0.21"):

              print("You need Cython version >=0.21 to use the Cython magic")

              return 

          print("""\nThough, because I am nice, I'll still try to load it for you this time.""")

          Cython.load_ipython_extension(ip)

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				# -- coding: utf-8 --
				"""
				The cython magic has been integrated into Cython itself,
				which is now released in version 0.21.

				cf github `Cython` organisation, `Cython` repo, under the
				file `Cython/Build/IpythonMagic.py`
				"""
				#-----------------------------------------------------------------------------
				# Copyright (C) 2010-2011, 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.
				#-----------------------------------------------------------------------------

				from __future__ import print_function

				import IPython.utils.version as version

				try:
				import Cython
				except:
				Cython = None

				try:
				from Cython.Build.IpythonMagic import CythonMagics
				except :
				pass


				## still load the magic in IPython 3.x, remove completely in future versions.
				def load_ipython_extension(ip):
				"""Load the extension in IPython."""

				print("""The Cython magic has been move to the Cython package, hence """)
				print("""`%load_ext cythonmagic` is deprecated; Please use `%load_ext Cython` instead.""")

				if Cython is None or not version.check_version(Cython.__version__, "0.21"):
				print("You need Cython version >=0.21 to use the Cython magic")
				return
				print("""\nThough, because I am nice, I'll still try to load it for you this time.""")
				Cython.load_ipython_extension(ip)