Mayavi doesn#39;t run from within Spyder: complains about quot;ValueError: API #39;QString#39; ...quot;(Mayavi不是从Spyder内部运行：抱怨Quot；ValueError：API#39；QString39；...)

问题描述

我无法从Spyder IDE中运行/使用Mayavi库。我已经在下面描述了这个问题。任何帮助都会非常有用。(提前非常感谢您。)

重现问题的步骤：

1. 只需在脚本中导入Mayavi库(例如，使用"；将mayavi.mlab导入为MLab"；)并执行该脚本即可重现此问题。
2. 我在这里添加了一个测试代码(请注意，此代码是来自Mayavi网站的示例代码)，以重现该问题：

代码

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()

预期输出和错误：

预期输出：一个带有图形的Mayavi图形窗口。 相反，我看到的是：控制台窗口中的以下值错误(为了明确起见，我包含了完整的消息序列)：

-

Traceback (most recent call last):
  File "C:PROGRAMSANDEXPERIMENTSPYTHONMayaviScriptsLearning	estMayavi.py", line 2, in <module>
    import mayavi.mlab as mmlab
  File "C:Python27libsite-packagesmayavimlab.py", line 27, in <module>
    from mayavi.tools.camera import view, roll, yaw, pitch, move
  File "C:Python27libsite-packagesmayavi	oolscamera.py", line 25, in <module>
    from engine_manager import get_engine
  File "C:Python27libsite-packagesmayavi	oolsengine_manager.py", line 12, in <module>
    from mayavi.preferences.api import preference_manager
  File "C:Python27libsite-packagesmayavipreferencesapi.py", line 4, in <module>
    from preference_manager import preference_manager
  File "C:Python27libsite-packagesmayavipreferencespreference_manager.py", line 29, in <module>
    from traitsui.api import View, Group, Item
  File "C:Python27libsite-packages	raitsuiapi.py", line 35, in <module>
    from .editors.api import (ArrayEditor, BooleanEditor, ButtonEditor,
  File "C:Python27libsite-packages	raitsuieditors\__init__.py", line 22, in <module>
    from .api import (toolkit, ArrayEditor, BooleanEditor, ButtonEditor,
  File "C:Python27libsite-packages	raitsuieditorsapi.py", line 10, in <module>
    from .code_editor import CodeEditor
  File "C:Python27libsite-packages	raitsuieditorscode_editor.py", line 36, in <module>
    class ToolkitEditorFactory ( EditorFactory ):
  File "C:Python27libsite-packages	raitsuieditorscode_editor.py", line 48, in ToolkitEditorFactory
    mark_color = Color( 0xECE9D8 )
  File "C:Python27libsite-packages	raits	raits.py", line 487, in __call__
    return self.maker_function( *args, **metadata )
  File "C:Python27libsite-packages	raits	raits.py", line 1183, in Color
    return ColorTrait( *args, **metadata )
  File "C:Python27libsite-packages	raitsui	oolkit_traits.py", line 7, in ColorTrait
    return toolkit().color_trait( *args, **traits )
  File "C:Python27libsite-packages	raitsui	oolkit.py", line 109, in toolkit
    _toolkit = _import_toolkit(ETSConfig.toolkit)
  File "C:Python27libsite-packages	raitsui	oolkit.py", line 51, in _import_toolkit
    return __import__( name, globals=globals(), level=1 ).toolkit
  File "C:Python27libsite-packages	raitsuiqt4\__init__.py", line 18, in <module>
    import pyface.qt
  File "C:Python27libsite-packagespyfaceqt\__init__.py", line 35, in <module>
    prepare_pyqt4()
  File "C:Python27libsite-packagespyfaceqt\__init__.py", line 17, in prepare_pyqt4
    sip.setapi('QString', 2)
  ValueError: API 'QString' has already been set to version 1

我的环境如下：