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Merge pull request #2868 from takluyver/import-performance...
Merge pull request #2868 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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test_shellapp.py
51 lines | 1.8 KiB | text/x-python | PythonLexer
# -*- coding: utf-8 -*-
"""Tests for shellapp module.
Authors
-------
* Bradley Froehle
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2012 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
import unittest
import nose.tools as nt
from IPython.testing import decorators as dec
from IPython.testing import tools as tt
class TestFileToRun(unittest.TestCase, tt.TempFileMixin):
"""Test the behavior of the file_to_run parameter."""
def test_py_script_file_attribute(self):
"""Test that `__file__` is set when running `ipython file.py`"""
src = "print(__file__)\n"
self.mktmp(src)
if dec.module_not_available('sqlite3'):
err = 'WARNING: IPython History requires SQLite, your history will not be saved\n'
else:
err = None
tt.ipexec_validate(self.fname, self.fname, err)
def test_ipy_script_file_attribute(self):
"""Test that `__file__` is set when running `ipython file.ipy`"""
src = "print(__file__)\n"
self.mktmp(src, ext='.ipy')
if dec.module_not_available('sqlite3'):
err = 'WARNING: IPython History requires SQLite, your history will not be saved\n'
else:
err = None
tt.ipexec_validate(self.fname, self.fname, err)
# Ideally we would also test that `__file__` is not set in the
# interactive namespace after running `ipython -i <file>`.