human
Solve the following python programming problem given the following code:
def __init__(self, parent, size = (400, 300), **kws) : 
    self.parent = parent 
    conf = parent.conf 
    kws ['style'] = wx.DEFAULT_FRAME_STYLE 
    wx.Frame.__init__ (self, parent, (- 1), size = size, title = 'XRF Color Settings', ** kws) 
    panel = GridPanel (self) 
    panel.SetFont (Font (11)) 
    def add_color(panel, name) : 
        cval = hexcolor (getattr (conf, name)) 
        c = csel.ColourSelect (panel, (- 1), '', cval, size = (35, 25)) 
        c.Bind (csel.EVT_COLOURSELECT, partial (self.onColor, item = name)) 
        return c 
SX = 130 
    def scolor(txt, attr, **kws) : 
        panel.AddText (txt, size = (SX, (- 1)), style = LEFT, font = Font (11), ** kws) 
        panel.Add (add_color (panel, attr), style = LEFT) 
panel.AddText ('    XRF Display Colors', dcol = 4, colour = '#880000') 
    panel.Add (HLine (panel, size = (400, 3)), dcol = 4, newrow = True) 
    scolor (' Main Spectra:', 'spectra_color', newrow = True) 
    scolor (' Background Spectra:', 'spectra2_color') 
    scolor (' ROIs:', 'roi_color', newrow = True) 
    scolor (' ROI Fill:', 'roi_fillcolor') 
    scolor (' Cursor:', 'marker_color', newrow = True) 
    scolor (' XRF Background:', 'bgr_color') 
    scolor (' Major X-ray Lines:', 'major_elinecolor', newrow = True) 
    scolor (' Minor X-ray Lines:', 'minor_elinecolor') 
    scolor (' Selected X-ray Line:', 'emph_elinecolor', newrow = True) 
    scolor (' Held  X-ray Lines:', 'hold_elinecolor') 
    panel.Add (HLine (panel, size = (400, 3)), dcol = 4, newrow = True) 
    panel.Add (Button (self, 'Done', size = (80, (- 1)), action = self.onDone), dcol = 2, newrow = True) 
    panel.pack () 
    self.SetMinSize (panel.GetBestSize ()) 
    self.Show () 
    self.Raise () 

    
    

    Fix the buggy line: panel.Add (Button (self, 'Done', size = (80, (- 1)), action = self.onDone), dcol = 2, newrow = True)
assistant
#Here is Python code to fix the buggy line: panel.

panel.Add (Button (panel, 'Done', size = (80, (- 1)), action = self.onDone), dcol = 2, newrow = True)