I am unable to run/use Mayavi library from within Spyder IDE. I have described the problem below. Any help will be very useful. (Thank you very much in advance.)
Steps to reproduce the problem:
- Just importing the Mayavi library in a script (for example using "import mayavi.mlab as mlab") and executing the script will reproduce this problem.
- I am including a test code (note that this code is an example code from the Mayavi website) here to reproduce the problem:
code
from numpy import sin, cos, mgrid
import mayavi.mlab as mmlab
def f(x,y):
return sin(x + y) + sin(2*x - y) + cos(3*x + 4*y)
x,y = mgrid[-7.:7.05:0.01, -5.:5.05:0.05]
z = f(x,y)
s = mmlab.contour_surf(x,y,z)
mmlab.show()
Expected output and the Error:
Expected output: A Mayavi figure window with the figure. What I see instead: The following Value error (I am including the full sequence of message in order to be explicit)in the console window:
-------------------------- Beginning of error message ------------------
Traceback (most recent call last):
File "C:\PROGRAMSANDEXPERIMENTS\PYTHON\MayaviScripts\Learning\testMayavi.py", line 2, in <module>
import mayavi.mlab as mmlab
File "C:\Python27\lib\site-packages\mayavi\mlab.py", line 27, in <module>
from mayavi.tools.camera import view, roll, yaw, pitch, move
File "C:\Python27\lib\site-packages\mayavi\tools\camera.py", line 25, in <module>
from engine_manager import get_engine
File "C:\Python27\lib\site-packages\mayavi\tools\engine_manager.py", line 12, in <module>
from mayavi.preferences.api import preference_manager
File "C:\Python27\lib\site-packages\mayavi\preferences\api.py", line 4, in <module>
from preference_manager import preference_manager
File "C:\Python27\lib\site-packages\mayavi\preferences\preference_manager.py", line 29, in <module>
from traitsui.api import View, Group, Item
File "C:\Python27\lib\site-packages\traitsui\api.py", line 35, in <module>
from .editors.api import (ArrayEditor, BooleanEditor, ButtonEditor,
File "C:\Python27\lib\site-packages\traitsui\editors\__init__.py", line 22, in <module>
from .api import (toolkit, ArrayEditor, BooleanEditor, ButtonEditor,
File "C:\Python27\lib\site-packages\traitsui\editors\api.py", line 10, in <module>
from .code_editor import CodeEditor
File "C:\Python27\lib\site-packages\traitsui\editors\code_editor.py", line 36, in <module>
class ToolkitEditorFactory ( EditorFactory ):
File "C:\Python27\lib\site-packages\traitsui\editors\code_editor.py", line 48, in ToolkitEditorFactory
mark_color = Color( 0xECE9D8 )
File "C:\Python27\lib\site-packages\traits\traits.py", line 487, in __call__
return self.maker_function( *args, **metadata )
File "C:\Python27\lib\site-packages\traits\traits.py", line 1183, in Color
return ColorTrait( *args, **metadata )
File "C:\Python27\lib\site-packages\traitsui\toolkit_traits.py", line 7, in ColorTrait
return toolkit().color_trait( *args, **traits )
File "C:\Python27\lib\site-packages\traitsui\toolkit.py", line 109, in toolkit
_toolkit = _import_toolkit(ETSConfig.toolkit)
File "C:\Python27\lib\site-packages\traitsui\toolkit.py", line 51, in _import_toolkit
return __import__( name, globals=globals(), level=1 ).toolkit
File "C:\Python27\lib\site-packages\traitsui\qt4\__init__.py", line 18, in <module>
import pyface.qt
File "C:\Python27\lib\site-packages\pyface\qt\__init__.py", line 35, in <module>
prepare_pyqt4()
File "C:\Python27\lib\site-packages\pyface\qt\__init__.py", line 17, in prepare_pyqt4
sip.setapi('QString', 2)
ValueError: API 'QString' has already been set to version 1
---------------------------- End of error message --------------------
My environment(s) are the following:
This issue has been observed at-least in the following two environments:
Environment 1:
Description: Spyder and all other components were installed using the Pythonxy distribution (Py(x,y)-2.7.2.3.exe) on a Windows 7, 32 bit machine). Spyder Version: 2.1.9 Python Version: 2.7.2 (32 bit) Qt Version: 4.7.4, PyQt4 (API v1) 4.8.6 on Windows Mayavi Version: 4.1.0
Environment 2:
Description: On a separate machine running 64 bit Windows 7, I have installed 64-bit version of the Enthought EPD distribution. So it is running 2.7.3 (x64) version of Python distribution. Since the EPD package doesn't include Spyder, I manually installed Spyder after installing PyQt GPLv4.9.4.
Spyder Version: 2.1.11
Python Version: 2.7.3 (64 bit)
Qt Version: 4.8.2, PyQt4 (API v2) 4.9.4 on Windows
Mayavi Version: 4.2.0
Additional information:
I am sure that the code is fine, as the script produces the expected output when executed "outside" spyder environment. For example, using IPython shell.
Thank you.
