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我是一名新手学生，使用 TraitsUI 模块来可视化数组特征。为了更新 Array 的值，我对演示代码做了一些修改，我收到了消息“IndexError: invalid index to scalar variable”

顺便说一句，我在 ArrayEditor 中使用了相同的方法并且它有效......

这个错误的原因是什么？

是否有正确的方法可以在 ArrayViewEditor 中启用 Array 值的更新？

下面是练习代码：

from numpy.random import random
from traits.api import HasTraits, Array,Button
from traitsui.api import View, Item
from traitsui.ui_editors.array_view_editor import ArrayViewEditor
import numpy as np

#-- ShowArray demo class -------------------------------------------------------

class ShowArray(HasTraits):

data = Array(editor = ArrayViewEditor(titles = [ 'x', 'y', 'z' ],
                                       format = '%.4f',
                                       show_index = False
                                       # Font fails with wx in OSX;
                                       #   see traitsui issue #13:
                                       # font   = 'Arial 8'
                                      ))
change = Button()
view = View(
    Item('data',show_label = False),
    Item('change',show_label = False),
    title     = 'Array Viewer',
    width     = 0.3,
    height    = 0.8,
    resizable = True
)
def _change_fired(self):
    self.data = np.arange(1,4)
#-- Run the demo ---------------------------------------------------------------

# Create the demo:
demo = ShowArray(data = random((100000, 3)))

# Run the demo (if invoked from the command line):
if __name__ == '__main__':
    demo.configure_traits()

我执行了代码，然后按下“更改”按钮，出现错误：

Traceback (most recent call last):
File "C:\Python27\lib\site-packages\traitsui\wx\tabular_editor.py", line 167, in OnGetItemText
row, column )
File "C:\Python27\lib\site-packages\traitsui\tabular_adapter.py", line 323, in get_text
return self._result_for( 'get_text', object, trait, row, column )
File "C:\Python27\lib\site-packages\traitsui\tabular_adapter.py", line 574, in _result_for
return handler()
File "C:\Python27\lib\site-packages\traitsui\tabular_adapter.py", line 582, in <lambda>
return lambda: getattr( self, name )
File "C:\Python27\lib\site-packages\traitsui\tabular_adapter.py", line 412, in _get_text
self.object, self.name, self.row, self.column )
File "C:\Python27\lib\site-packages\traitsui\tabular_adapter.py", line 329, in get_content
return self._result_for( 'get_content', object, trait, row, column )
File "C:\Python27\lib\site-packages\traitsui\tabular_adapter.py", line 574, in _result_for
return handler()
File "C:\Python27\lib\site-packages\traitsui\tabular_adapter.py", line 582, in <lambda>
return lambda: getattr( self, name )
File "C:\Python27\lib\site-packages\traitsui\ui_editors\array_view_editor.py", line 53, in _get_content
return self.item[ self.column_id ]
IndexError: invalid index to scalar variable.

Python 2.7.3，32 位。特质ui-4.2.0

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