def heading(self, column, option=None, **kw):
        """Query or modify the heading options for the specified column.

        If kw is not given, returns a dict of the heading option values. If
        option is specified then the value for that option is returned.
        Otherwise, sets the options to the corresponding values.

        Valid options/values are:
            text: text
                The text to display in the column heading
            image: image_name
                Specifies an image to display to the right of the column
                heading
            anchor: anchor
                Specifies how the heading text should be aligned. One of
                the standard Tk anchor values
            command: callback
                A callback to be invoked when the heading label is
                pressed.

        To configure the tree column heading, call this with column = "#0" """
        cmd = kw.get('command')
        if cmd and not isinstance(cmd, basestring):
            # callback not registered yet, do it now
            kw['command'] = self.master.register(cmd, self._substitute)

        if option is not None:
            kw[option] = None

        return _val_or_dict(self.tk, kw, self._w, 'heading', column)
dataset/ETHPy150Open francelabs/datafari/windows/python/Lib/lib-tk/ttk.py/Treeview.heading/original