upstream/ipython Files · IPython/lib/tests/test_imports.py

Merge pull request from takluyver/import-performance...

Merge pull request from takluyver/import-performance Import performance Defer various imports for a small reduction in startup time. IPython.lib.__init__ previously loaded IPython.lib.inputhook to export some of its functions. This meant that importing anything from IPython.lib also loaded inputhook. For now, I've just removed that import, but that is an API change, because the functions are no longer accessible as e.g. IPython.lib.enable_qt4 Added a note about the API change. Timing command, borrowed from Openoffice to simulate cold start: $ sync ; echo 3 | sudo tee /proc/sys/vm/drop_caches; time ipython3 -c pass Results with this branch: 7.68, 7.64, 7.35, 7.38 s 'real' Results with master: 8.17, 8.04, 7.81, 7.77

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        Brian Granger
    
background_jobs.py => lib/backgroundjob.py and imports updated.

              r2011
            
      # encoding: utf-8

      def test_import_backgroundjobs():

          from IPython.lib import backgroundjobs

        Brian Granger
    
deep_reload.py =? lib/deepreload.py and imports updated.

              r2016
            
      def test_import_deepreload():

          from IPython.lib import deepreload

        Brian Granger
    
demo.py => lib/demo.py and imports updated.

              r2017
            
      def test_import_demo():

        Brian Granger
    
irunner.py => lib/irunner.py and imports updated.

              r2035
            
          from IPython.lib import demo

      def test_import_irunner():

          from IPython.lib import demo

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Brian Granger background_jobs.py => lib/backgroundjob.py and imports updated.	r2011	# encoding: utf-8

		def test_import_backgroundjobs():
		from IPython.lib import backgroundjobs

Brian Granger deep_reload.py =? lib/deepreload.py and imports updated.	r2016	def test_import_deepreload():
		from IPython.lib import deepreload

Brian Granger demo.py => lib/demo.py and imports updated.	r2017	def test_import_demo():
Brian Granger irunner.py => lib/irunner.py and imports updated.	r2035	from IPython.lib import demo

		def test_import_irunner():
		from IPython.lib import demo