On Jan 18, 11:30 pm, PeterT <[email protected]> wrote:
> Hi,
>
> I have the enthought suite installed via svn build (http://
> code.enthought.com/source/) importing mlab works fin from a non-spyder
> shell python or Ipython shell using:
>
> from enthought.mayavi import mlab
>
> however attempting to import mlab using spyders imbedded shell (either
> IPyton or Python) results in the following error:
>
> In [1]: from enthought.mayavi import mlab
> ------------------------------------------------------------
> Traceback (most recent call last):
> File "<ipython console>", line 1, in <module>
> File "<homedir>/src/ETS/Mayavi/enthought/mayavi/mlab.py", line 27,
> in <module>
> from enthought.mayavi.tools.camera import view, roll, yaw, pitch,
> move
> File "<homedir>/src/ETS/Mayavi/enthought/mayavi/tools/camera.py",
> line 23, in <module>
> from engine_manager import get_engine
> File "<homedir>/src/ETS/Mayavi/enthought/mayavi/tools/
> engine_manager.py", line 12, in <module>
> from enthought.mayavi.preferences.api import preference_manager
> File "<homedir>/src/ETS/Mayavi/enthought/mayavi/preferences/api.py",
> line 4, in <module>
> from preference_manager import preference_manager
> File "<homedir>/src/ETS/Mayavi/enthought/mayavi/preferences/
> preference_manager.py", line 29, in <module>
> from enthought.traits.ui.api import View, Group, Item
> File "<homedir>/src/ETS/Traits/enthought/traits/ui/api.py", line 35,
> in <module>
> from .editors.api import (ArrayEditor, BooleanEditor,
> ButtonEditor,
> File "<homedir>/src/ETS/Traits/enthought/traits/ui/editors/
> __init__.py", line 22, in <module>
> from .api import (toolkit, ArrayEditor, BooleanEditor,
> ButtonEditor,
> File "<homedir>/src/ETS/Traits/enthought/traits/ui/editors/api.py",
> line 10, in <module>
> from .code_editor import CodeEditor
> File "<homedir>/src/ETS/Traits/enthought/traits/ui/editors/
> code_editor.py", line 36, in <module>
> class ToolkitEditorFactory ( EditorFactory ):
> File "<homedir>/src/ETS/Traits/enthought/traits/ui/editors/
> code_editor.py", line 48, in ToolkitEditorFactory
> mark_color = Color( 0xECE9D8 )
> File "<homedir>/src/ETS/Traits/enthought/traits/traits.py", line
> 486, in __call__
> return self.maker_function( *args, **metadata )
> File "<homedir>/src/ETS/Traits/enthought/traits/traits.py", line
> 1182, in Color
> return ColorTrait( *args, **metadata )
> File "<homedir>/src/ETS/Traits/enthought/traits/ui/
> toolkit_traits.py", line 7, in ColorTrait
> return toolkit().color_trait( *args, **traits )
> File "<homedir>/src/ETS/Traits/enthought/traits/ui/toolkit.py", line
> 109, in toolkit
> _toolkit = _import_toolkit(ETSConfig.toolkit)
> File "<homedir>/src/ETS/Traits/enthought/traits/ui/toolkit.py", line
> 51, in _import_toolkit
> return __import__( name, globals=globals(), level=1 ).toolkit
> File "<homedir>/src/ETS/TraitsBackendQt/enthought/traits/ui/qt4/
> __init__.py", line 18, in <module>
> import enthought.qt.api
> File "<homedir>/src/ETS/EnthoughtBase/enthought/qt/api.py", line 22,
> in <module>
> sip.setapi('QString', 2)
> ValueError: API 'QString' has already been set to version 1
>
> there seems to be reference to a problem like this that was solved for
> some after version version 1.1.0rc2 (http://groups.google.com/group/
> spyderlib/browse_thread/thread/dce9b160579ae20d) hwever, im using the
> hg repository.
>
> I am on linux (Ubuntu 10.10) x64
>
> Thanks in advance for any assistance.
>
> Peter
>
> PS. I use spyder every day and am exceedingly impressed/happy with it,
> thanks!
Hi,
Thanks for taking the time to report this unexpected behavior, for
using Spyder and for your enthousiasm regarding the project.
Apparently, the Enthought package is using the API #2 of PyQt whereas
Spyder is using API #1. Spyder needs to import PyQt when opening any
console (when opening a stand-alone Python/IPython interpreter or when
running a Python script) to provide code introspection features (code
completion, variable explorer). If you don't need these features, you
may disable the 'Monitor' in Console preferences ('Advanced').
Moreover, it is necessary to disable the Matplotlib patch ('External
modules' tab of console preferences). Then, it should work in any
Python interpreter. As for IPython, you may have to remove the 'pylab'
option which could import PyQt if it has been defined as the
Matplotlib's backend.
I've already successfully tested this on Ubuntu 10.10.
I realize that it is a bit complicate but hopefully things will be
much simpler when every single package will be using the same PyQt
API. Spyder should switch from API #1 to API #2 this year.
Cheers,
Pierre
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