python特性：Tab中的按钮列

Question

我想在表的每一行末尾添加一个按钮。在

关闭窗口时，以下代码会导致PyDeadObjectError：

from traits.api import HasTraits,Str,Int,Button,Instance
from traitsui.api import TableEditor,ObjectColumn,View
class Person(HasTraits):
    name=Str
    age=Int
    Plot_size=Button(label='Plot size')

class Display(HasTraits):
    table=List(Instance(Person))
    table_editor=TableEditor(columns=[ObjectColumn(name='name'),
        ObjectColumn(name='age'),
        ObjectColumn(name='Plot_size')],
        deletable = True,
        sortable = False,
        sort_model = False,
        show_lines = True,
        orientation = 'vertical',
        show_column_labels = True)
    traits_view=View(Item('table',editor=table_editor),resizable=True)

a=Display()
a.table.append(Person(name='Joe',age=21))
a.table.append(Person(name='John',age=27))
a.table.append(Person(name='Jenny',age=23))
a.configure_traits()

有人已经试过这么做了吗？我怎样才能消除这个错误？是否可以在不单击相应单元格的情况下显示按钮？在

Answer 1

我不确定问题出在哪里，但也许有一个解决办法。使用一个按钮，然后使用所选行，而不是让一列按钮充满按钮。在

from traits.api import HasTraits,Str,Int,Button,Instance, List
from traitsui.api import TableEditor,ObjectColumn,View, Item

class Person(HasTraits):
    name=Str
    age=Int
    #Plot_size=Button(label='Plot size')


class Display(HasTraits):
    Plot_size=Button(label='Plot size')
    selected_person = Instance(Person)

    people=List(Instance(Person))
    table_editor=TableEditor(columns=[ObjectColumn(name='name'),
        ObjectColumn(name='age')],
        selected='selected_person',
        #ObjectColumn(name='Plot_size', editable=False)],
        deletable = True,
        sortable = False,
        sort_model = False,
        show_lines = True,
        orientation = 'vertical',
        show_column_labels = True)

    traits_view=View(Item('people',editor=table_editor),
            Item('Plot_size'),
            resizable=True)

    def _Plot_size_fired(self):
            print self.selected_person.name

demo=Display(people = [Person(name='Joe',age=21),
    Person(name='John',age=27),
    Person(name='Jenny',age=23)])

if __name__ == '__main__':
    demo.configure_traits()

否则，也许checkbox_列示例是一个很好的起点。在