upstream/ipython Files · IPython/deathrow/numeric_formats.py

Added GTK support to ZeroMQ kernel....

Added GTK support to ZeroMQ kernel. We use an approach which is a combination of an gtk timer callback into our execution loop, like we do for Qt and Wx, I've run as tests several GTK examples found on the net, as well as multiple matplotlib scripts, and so far everything works as expected. The only catch is that we silently trap gtk.main_quit(), so examples that call it with a 'close' button or similar seem to not do anything. But their windows close normally and no other problems have been found. This solution uses code taken from an old bug report of ours: https://bugs.launchpad.net/ipython/+bug/270856 specifically the attachment in this comment: https://bugs.launchpad.net/ipython/+bug/270856/comments/6 along with the changes suggested by Michiel de Hoon there. Thanks to Ville and Michiel for that old discussion, which put me on the right track to figure out the details of the logic needed for GTK.

Brian Granger - - Load All Authors

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      # -*- coding: utf-8 -*-

      """

      Extension for printing Numeric Arrays in flexible ways.

      """

      from Numeric import ArrayType

      def num_display(self,arg):

          """Display method for printing which treats Numeric arrays specially.

          """

          # Non-numpy variables are printed using the system default

          if type(arg) != ArrayType:

              self._display(arg)

              return

          # Otherwise, we do work.

          format = __IPYTHON__.runtime_rc.numarray_print_format

          print 'NumPy array, format:',format

          # Here is where all the printing logic needs to be implemented

          print arg # nothing yet :)

      def magic_format(self,parameter_s=''):

          """Specifies format of numerical output.

          This command is similar to Ocave's format command.

          """

          valid_formats = ['long','short']

          if parameter_s in valid_formats:

              self.runtime_rc.numarray_print_format = parameter_s

              print 'Numeric output format is now:',parameter_s

          else:

              print 'Invalid format:',parameter_s

              print 'Valid formats:',valid_formats

      # setup default format

      __IPYTHON__.runtime_rc.numarray_print_format = 'long'

      # Bind our new functions to the interpreter

      __IPYTHON__.__class__.magic_format = magic_format

      __IPYTHON__.hooks.display = num_display

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				# -- coding: utf-8 --
				"""
				Extension for printing Numeric Arrays in flexible ways.
				"""

				from Numeric import ArrayType

				def num_display(self,arg):
				"""Display method for printing which treats Numeric arrays specially.
				"""

				# Non-numpy variables are printed using the system default
				if type(arg) != ArrayType:
				self._display(arg)
				return
				# Otherwise, we do work.
				format = __IPYTHON__.runtime_rc.numarray_print_format
				print 'NumPy array, format:',format
				# Here is where all the printing logic needs to be implemented
				print arg # nothing yet :)


				def magic_format(self,parameter_s=''):
				"""Specifies format of numerical output.

				This command is similar to Ocave's format command.
				"""

				valid_formats = ['long','short']

				if parameter_s in valid_formats:
				self.runtime_rc.numarray_print_format = parameter_s
				print 'Numeric output format is now:',parameter_s
				else:
				print 'Invalid format:',parameter_s
				print 'Valid formats:',valid_formats

				# setup default format
				__IPYTHON__.runtime_rc.numarray_print_format = 'long'

				# Bind our new functions to the interpreter
				__IPYTHON__.__class__.magic_format = magic_format
				__IPYTHON__.hooks.display = num_display