upstream/ipython Files · IPython/utils/tests/test_importstring.py

Refuse to install event loop hooks when not using `prompt_toolkit` (#14132)...

Refuse to install event loop hooks when not using `prompt_toolkit` (#14132) Without this, `%gui` is effectively a no-op but the user thinks it works. For example. If running `ipython`: ``` In [1]: import matplotlib; matplotlib.use('QtAgg'); from matplotlib import pyplot; pyplot.ion(); pyplot.plot([1, 2, 3, 4]) Installed qt6 event loop hook. Out[1]: [<matplotlib.lines.Line2D at 0x1ba2f59d2a0>] ``` The window appears and responds as expected. If running `ipython --simple-prompt`, the user would see the same output, when in fact no event loop hook was installed since it's not supported without `prompt_toolkit`. The resulting Qt window is unresponsive because the event loop is not running, i.e. with `--simple-prompt`, Qt windows should block (but `pyplot` doesn't/can't know to do that) With this PR, the user will see: ``` In [1]: import matplotlib; matplotlib.use('QtAgg'); from matplotlib import pyplot; pyplot.ion(); pyplot.plot([1, 2, 3, 4]) Cannot install event loop hook for "qt" when running with `--simple-prompt`. NOTE: Tk is supported natively; use Tk apps and Tk backends with `--simple-prompt`. Out[1]: [<matplotlib.lines.Line2D at 0x170be0c0310>] ``` They'll still get an unresponsive Qt window, but they'll at least be told this can't work (while anything using Tk will work just fine).

Samuel Gaist - - Load All Authors

File last commit:

r26919:77e81773


                r28368:22fc5ab5

Download file

             test_importstring.py
        
                    40 lines
            
             | 1.2 KiB
            
                | text/x-python
            
             |
                PythonLexer
            
             / IPython / utils / tests / test_importstring.py
          
                    History
                
                 |
                  Source
                 | Raw
                 |Copy content
                 |Copy permalink

        Fernando Perez
    
Add proper tests to importstring.

              r11017
            
      """Tests for IPython.utils.importstring."""

      #-----------------------------------------------------------------------------

      #  Copyright (C) 2013  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

      #-----------------------------------------------------------------------------

        Samuel Gaist
    
[utils][tests][importstring] Remove nose

              r26919
            
      import pytest

        Fernando Perez
    
Add proper tests to importstring.

              r11017
            
      from IPython.utils.importstring import import_item

      #-----------------------------------------------------------------------------

      # Tests

      #-----------------------------------------------------------------------------

      def test_import_plain():

          "Test simple imports"

          import os

        Samuel Gaist
    
[utils][tests][importstring] Remove nose

              r26919
            
          os2 = import_item("os")

          assert os is os2

        Fernando Perez
    
Add proper tests to importstring.

              r11017
            
      def test_import_nested():

          "Test nested imports from the stdlib"

          from os import path

        Samuel Gaist
    
[utils][tests][importstring] Remove nose

              r26919
            
          path2 = import_item("os.path")

          assert path is path2

        Fernando Perez
    
Add proper tests to importstring.

              r11017
            
      def test_import_raises():

          "Test that failing imports raise the right exception"

        Samuel Gaist
    
[utils][tests][importstring] Remove nose

              r26919
            
          pytest.raises(ImportError, import_item, "IPython.foobar")

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

Fernando Perez Add proper tests to importstring.	r11017	"""Tests for IPython.utils.importstring."""

		#-----------------------------------------------------------------------------
		# Copyright (C) 2013 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
		#-----------------------------------------------------------------------------

Samuel Gaist [utils][tests][importstring] Remove nose	r26919	import pytest
Fernando Perez Add proper tests to importstring.	r11017
		from IPython.utils.importstring import import_item

		#-----------------------------------------------------------------------------
		# Tests
		#-----------------------------------------------------------------------------

		def test_import_plain():
		"Test simple imports"
		import os
Samuel Gaist [utils][tests][importstring] Remove nose	r26919
		os2 = import_item("os")
		assert os is os2
Fernando Perez Add proper tests to importstring.	r11017

		def test_import_nested():
		"Test nested imports from the stdlib"
		from os import path
Samuel Gaist [utils][tests][importstring] Remove nose	r26919
		path2 = import_item("os.path")
		assert path is path2
Fernando Perez Add proper tests to importstring.	r11017

		def test_import_raises():
		"Test that failing imports raise the right exception"
Samuel Gaist [utils][tests][importstring] Remove nose	r26919	pytest.raises(ImportError, import_item, "IPython.foobar")