upstream/ipython Files · docs/examples/parallel/helloworld.py

inputhookqt4: make hook more robust in case of unexpected conditions...

inputhookqt4: make hook more robust in case of unexpected conditions - return early if there's no longer a qApp - trap any exception that could be raised from within the hook, report it and unregister the hook

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      # <nbformat>2</nbformat>

      # <markdowncell>

      # # Distributed hello world

      # 

      # Originally by Ken Kinder (ken at kenkinder dom com)

      # <codecell>

      from IPython.parallel import Client

      # <codecell>

      rc = Client()

      view = rc.load_balanced_view()

      # <codecell>

      def sleep_and_echo(t, msg):

          import time

          time.sleep(t)

          return msg

      # <codecell>

      world = view.apply_async(sleep_and_echo, 3, 'World!')

      hello = view.apply_async(sleep_and_echo, 2, 'Hello')

      # <codecell>

      print "Submitted tasks:", hello.msg_ids, world.msg_ids

      print hello.get(), world.get()

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				# <nbformat>2</nbformat>

				# <markdowncell>

				# # Distributed hello world
				#
				# Originally by Ken Kinder (ken at kenkinder dom com)

				# <codecell>

				from IPython.parallel import Client

				# <codecell>

				rc = Client()
				view = rc.load_balanced_view()

				# <codecell>

				def sleep_and_echo(t, msg):
				import time
				time.sleep(t)
				return msg

				# <codecell>

				world = view.apply_async(sleep_and_echo, 3, 'World!')
				hello = view.apply_async(sleep_and_echo, 2, 'Hello')

				# <codecell>

				print "Submitted tasks:", hello.msg_ids, world.msg_ids
				print hello.get(), world.get()