import wx

class MainFrame(wx.Frame):
    def __init__(self, parent):
        super(MainFrame, self).__init__(parent)
        button = wx.Button(self, label="Mehet")
        button.Bind(wx.EVT_BUTTON, self.on_click_button)

    def on_click_button(self, event):
        print('vmi')
        cd = wx.ColourDialog(self)
        cd.ShowModal()
        colourData = cd.GetColourData()
        print(colourData.GetColour().Get())

class ValamiApp(wx.App):
    def OnInit(self):
        frame = MainFrame(None)
        frame.Show()
        return True

app=ValamiApp()
app.MainLoop()