upstream/ipython Files · docs/examples/lib/example-demo.py

Update deepreload to use a rewritten knee.py. Fixes dreload(numpy)....

Update deepreload to use a rewritten knee.py. Fixes dreload(numpy). knee.py, a Python re-implementation of hierarchical module import was removed from the standard library because it no longer functioned properly. deepreload.py is little more than a hacked version of knee.py which overrides __builtin__.__import__ to ensure that each module is re-imported once (before just referring to sys.modules as usual). In addition, `os.path` was added to the default excluded modules, since somehow it has an entry in sys.modules without `os' being a package.

Thomas Kluyver - - Load All Authors

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      """A simple interactive demo to illustrate the use of IPython's Demo class.

      Any python script can be run as a demo, but that does little more than showing

      it on-screen, syntax-highlighted in one shot.  If you add a little simple

      markup, you can stop at specified intervals and return to the ipython prompt,

      resuming execution later.

      """

      from __future__ import print_function

      print('Hello, welcome to an interactive IPython demo.')

      print('Executing this block should require confirmation before proceeding,')

      print('unless auto_all has been set to true in the demo object')

      # The mark below defines a block boundary, which is a point where IPython will

      # stop execution and return to the interactive prompt.

      # Note that in actual interactive execution, 

      # <demo> --- stop ---

      x = 1

      y = 2

      # <demo> --- stop ---

      # the mark below makes this block as silent

      # <demo> silent

      print('This is a silent block, which gets executed but not printed.')

      # <demo> --- stop ---

      # <demo> auto

      print('This is an automatic block.')

      print('It is executed without asking for confirmation, but printed.')

      z = x+y

      print('z=',x)

      # <demo> --- stop ---

      # This is just another normal block.

      print('z is now:', z)

      print('bye!')

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				"""A simple interactive demo to illustrate the use of IPython's Demo class.

				Any python script can be run as a demo, but that does little more than showing
				it on-screen, syntax-highlighted in one shot. If you add a little simple
				markup, you can stop at specified intervals and return to the ipython prompt,
				resuming execution later.
				"""
				from __future__ import print_function

				print('Hello, welcome to an interactive IPython demo.')
				print('Executing this block should require confirmation before proceeding,')
				print('unless auto_all has been set to true in the demo object')

				# The mark below defines a block boundary, which is a point where IPython will
				# stop execution and return to the interactive prompt.
				# Note that in actual interactive execution,
				# <demo> --- stop ---

				x = 1
				y = 2

				# <demo> --- stop ---

				# the mark below makes this block as silent
				# <demo> silent

				print('This is a silent block, which gets executed but not printed.')

				# <demo> --- stop ---
				# <demo> auto
				print('This is an automatic block.')
				print('It is executed without asking for confirmation, but printed.')
				z = x+y

				print('z=',x)

				# <demo> --- stop ---
				# This is just another normal block.
				print('z is now:', z)

				print('bye!')