ModuleNotFoundError: No module named 'traitsui.qt4.editor' when running mayavi/examples/mayavi/interactive/lorenz_ui.py

[homosapien-lcy]

When running mayavi/examples/mayavi/interactive/lorenz_ui.py, ModuleNotFoundError: No module named 'traitsui.qt4.editor' will be raised. This is probably due to mayavi haven't adapted to the update of qt renaming in traitsui

Replication: python3.11 mayavi/examples/mayavi/interactive/lorenz_ui.py

Trace:

(py311) (base) cyliu@aus552cyliu mayavi % python3.11 examples/mayavi/interactive/lorenz_ui.py 
/Users/cyliu/Documents/3.11_test/mayavi/tvtk/pyface/ui/qt4/scene_editor.py:16: FutureWarning: The traitsui.qt4.* modules have moved to traitsui.qt.*.

Applications which require backwards compatibility can either:

- set the ETS_QT4_IMPORTS environment variable
- set the ETS_TOOLKIT environment variable to "qt4",
- the ETSConfig.toolkit to "qt4"
- install a ShadowedModuleFinder into sys.meta_path::

    import sys
    from pyface.ui import ShadowedModuleFinder

    sys.meta_path.append(ShadowedModuleFinder(
        package="traitsui.qt4.",
        true_package="traitsui.qt.",
    ))

  from traitsui.qt4.editor import Editor
Traceback (most recent call last):
  File "/Users/cyliu/Documents/3.11_test/mayavi/examples/mayavi/interactive/lorenz_ui.py", line 24, in <module>
    from mayavi.core.ui.api import MayaviScene, MlabSceneModel, \
  File "/Users/cyliu/Documents/3.11_test/mayavi/mayavi/core/ui/api.py", line 4, in <module>
    from tvtk.pyface.scene_editor import SceneEditor
  File "/Users/cyliu/Documents/3.11_test/mayavi/tvtk/pyface/scene_editor.py", line 12, in <module>
    SceneEditor = toolkit_object('scene_editor:SceneEditor')
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/cyliu/Documents/3.11_test/pyface/pyface/base_toolkit.py", line 127, in __call__
    module = import_module(mname, package)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/python@3.11/3.11.2_1/Frameworks/Python.framework/Versions/3.11/lib/python3.11/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/cyliu/Documents/3.11_test/mayavi/tvtk/pyface/ui/qt4/scene_editor.py", line 16, in <module>
    from traitsui.qt4.editor import Editor
ModuleNotFoundError: No module named 'traitsui.qt4.editor'

Link: https://github.com/enthought/mayavi/blob/master/examples/mayavi/interactive/lorenz_ui.py

Env: MacOS, python3.11

Package Version Editable project location

---

apptools 5.2.0 attrdict 2.0.1 attrdict3 2.0.2 blosc2 2.0.0 celiagg 2.1.3 certifi 2022.12.7 chaco 5.1.0 /Users/cyliu/Documents/3.11_test/chaco charset-normalizer 3.1.0 configobj 5.0.8 contourpy 1.0.7 cPython 0.0.6 cycler 0.11.0 Cython 0.29.34 dnspython 2.3.0 enable 5.4.0.dev38 /Users/cyliu/Documents/3.11_test/enable envisage 7.0.3 fonttools 4.39.2 h5py 3.8.0 idna 3.4 joblib 1.2.0 kiwisolver 1.4.4 matplotlib 3.7.1 mayavi 4.8.2.dev0 /Users/cyliu/Documents/3.11_test/mayavi msgpack 1.0.5 numexpr 2.8.4 numpy 1.24.2 packaging 23.1 pandas 1.5.3 Pillow 9.4.0 pip 23.1 py-cpuinfo 9.0.0 PyAudio 0.2.13 pyface 8.0.0 /Users/cyliu/Documents/3.11_test/pyface pygarrayimage 1.0 pyglet 2.0.5 /Users/cyliu/Documents/3.11_test/pyglet Pygments 2.14.0 pymongo 4.3.3 pyparsing 3.0.9 PySide6 6.4.3 PySide6-Addons 6.4.3 PySide6-Essentials 6.4.3 python-dateutil 2.8.2 pythonw 3.0.3 pytz 2023.2 reportlab 3.6.12 requests 2.28.2 scikit-learn 1.2.2 scipy 1.10.1 setuptools 65.6.3 shiboken6 6.4.3 six 1.16.0 tables 3.8.0 threadpoolctl 3.1.0 traits 6.4.1 traitsui 8.0.0.dev0 /Users/cyliu/Documents/3.11_test/traitsui urllib3 1.26.15 vtk 9.2.6 wxPython 4.2.0

[prabhuramachandran]

I will look at the qt related migration later this week.

[Roly83]

Hola. Por favor donde puedo encontrar una solución a este problema: Traceback (most recent call last): File "pyface\base_toolkit.py", line 219, in import_toolkit File "importlib\metadata__init.py", line 162, in load File "importlib\init__.py", line 126, in import_module File "", line 1050, in _gcd_import File "", line 1027, in _find_and_load File "", line 1004, in _find_and_load_unlocked ModuleNotFoundError: No module named 'traitsui.qt4'

The above exception was the direct cause of the following exception:

Traceback (most recent call last): File "CCMM.py", line 10, in File "", line 1027, in _find_and_load File "", line 1006, in _find_and_load_unlocked File "", line 688, in _load_unlocked File "PyInstaller\loader\pyimod02_importers.py", line 385, in exec_module File "mayavi\mlab.py", line 16, in File "", line 1027, in _find_and_load File "", line 1006, in _find_and_load_unlocked File "", line 688, in _load_unlocked File "PyInstaller\loader\pyimod02_importers.py", line 385, in exec_module File "mayavi\tools\camera.py", line 24, in File "", line 1027, in _find_and_load File "", line 1006, in _find_and_load_unlocked File "", line 688, in _load_unlocked File "PyInstaller\loader\pyimod02_importers.py", line 385, in exec_module File "mayavi\tools\engine_manager.py", line 13, in File "", line 1027, in _find_and_load File "", line 1006, in _find_and_load_unlocked File "", line 688, in _load_unlocked File "PyInstaller\loader\pyimod02_importers.py", line 385, in exec_module File "mayavi\preferences\api.py", line 4, in File "", line 1027, in _find_and_load File "", line 1006, in _find_and_load_unlocked File "", line 688, in _load_unlocked File "PyInstaller\loader\pyimod02_importers.py", line 385, in exec_module File "mayavi\preferences\preference_manager.py", line 29, in File "", line 1027, in _find_and_load File "", line 1006, in _find_and_load_unlocked File "", line 688, in _load_unlocked File "PyInstaller\loader\pyimod02_importers.py", line 385, in exec_module File "traitsui\api.py", line 257, in File "", line 1027, in _find_and_load File "", line 1006, in _find_and_load_unlocked File "", line 688, in _load_unlocked File "PyInstaller\loader\pyimod02_importers.py", line 385, in exec_module File "traitsui\editors__init__.py", line 16, in File "", line 1027, in _find_and_load File "", line 1006, in _find_and_load_unlocked File "", line 688, in _load_unlocked File "PyInstaller\loader\pyimod02_importers.py", line 385, in exec_module File "traitsui\editors\api.py", line 96, in File "", line 1027, in _find_and_load File "", line 1006, in _find_and_load_unlocked File "", line 688, in _load_unlocked File "PyInstaller\loader\pyimod02_importers.py", line 385, in exec_module File "traitsui\editors\code_editor.py", line 21, in File "traitsui\editors\code_editor.py", line 32, in CodeEditor File "traits\trait_factory.py", line 40, in call File "traitsui\toolkit_traits.py", line 43, in ColorTrait File "traitsui\toolkit.py", line 110, in toolkit File "pyface\base_toolkit.py", line 269, in find_toolkit File "pyface\base_toolkit.py", line 231, in import_toolkit RuntimeError: No traitsui.toolkits plugin could be loaded for qt4

[JLBegin]

@homosapien-lcy Thats a compatibility issue with traitsui 8.0.0. In the meantime you should force pip to install the previous version: pip install --upgrade traitsui==7.4.3.

[corranwebster]

In the mean-time you can set environment variables as described in the Pyface and TraitsUI documentation: https://docs.enthought.com/pyface/toolkits.html#the-qt4-toolkit

[matrix618]

@homosapien-lcy Thats a compatibility issue with traitsui 8.0.0. In the meantime you should force pip to install the previous version: pip install --upgrade traitsui==7.4.3.

is good