upstream/ipython Files · docs/examples/kernel/pwordfreq_skel.py

Lots of work on exception handling, including tests for traceback printing....

Lots of work on exception handling, including tests for traceback printing. We finally have some tests for various exception mode printing, via doctests that exercise all three modes! Also changed handling of sys.exit(X) to only print the summary message, as SystemExit is most often a 'handled' exception. It can still be 100% silenced via '%run -e', but now it's much less intrusive. Added a new %tb magic to print the last available traceback with the current xmode. One can then re-print the last traceback with more detail if desired, without having to cause it again.

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      #!/usr/bin/env python

      """Parallel word frequency counter."""

      from itertools import repeat

      from wordfreq import print_wordfreq, wordfreq

      def pwordfreq(rc, text):

          """Parallel word frequency counter.

          rc - An IPython RemoteController

          text - The name of a string on the engines to do the freq count on.

          """

      if __name__ == '__main__':

          # Create a MultiEngineClient

          from IPython.kernel import client

          ipc = client.MultiEngineClient()

          # Run the wordfreq script on the engines.

          ipc.run('wordfreq.py')

          # Run the serial version

          print "Serial word frequency count:"

          text = open('davinci.txt').read()

          freqs = wordfreq(text)

          print_wordfreq(freqs, 10)

          # The parallel version

          print "\nParallel word frequency count:"

          files = ['davinci%i.txt' % i for i in range(4)]

          ipc.scatter('textfile', files)

          ipc.execute('text = open(textfile[0]).read()')

          pfreqs = pwordfreq(ipc,'text')

          print_wordfreq(freqs)

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				#!/usr/bin/env python
				"""Parallel word frequency counter."""


				from itertools import repeat
				from wordfreq import print_wordfreq, wordfreq

				def pwordfreq(rc, text):
				"""Parallel word frequency counter.

				rc - An IPython RemoteController
				text - The name of a string on the engines to do the freq count on.
				"""

				if __name__ == '__main__':
				# Create a MultiEngineClient
				from IPython.kernel import client
				ipc = client.MultiEngineClient()

				# Run the wordfreq script on the engines.
				ipc.run('wordfreq.py')

				# Run the serial version
				print "Serial word frequency count:"
				text = open('davinci.txt').read()
				freqs = wordfreq(text)
				print_wordfreq(freqs, 10)

				# The parallel version
				print "\nParallel word frequency count:"
				files = ['davinci%i.txt' % i for i in range(4)]
				ipc.scatter('textfile', files)
				ipc.execute('text = open(textfile[0]).read()')
				pfreqs = pwordfreq(ipc,'text')
				print_wordfreq(freqs)