Best way to get the name of a button that called an event?

Question

In the following code (inspired by this snippet), I use a single event handler buttonClick to change the title of the window. Currently, I need to evaluate if the Id of the event corresponds to the Id of the button. If I decide to add 50 buttons instead of 2, this method could become cumbersome. Is there a better way to do this?

import wx

class MyFrame(wx.Frame):
    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY, 'wxBitmapButton',
            pos=(300, 150), size=(300, 350))
        self.panel1 = wx.Panel(self, -1)

        self.button1 = wx.Button(self.panel1, id=-1,
            pos=(10, 20), size = (20,20))
        self.button1.Bind(wx.EVT_BUTTON, self.buttonClick)

        self.button2 = wx.Button(self.panel1, id=-1,
            pos=(40, 20), size = (20,20))
        self.button2.Bind(wx.EVT_BUTTON, self.buttonClick)

        self.Show(True)

    def buttonClick(self,event):
        if event.Id == self.button1.Id:
            self.SetTitle("Button 1 clicked")
        elif event.Id == self.button2.Id:
            self.SetTitle("Button 2 clicked")            

application = wx.PySimpleApp()
window = MyFrame()
application.MainLoop()

Answer 1

You could give the button a name, and then look at the name in the event handler.

When you make the button

b = wx.Button(self, 10, "Default Button", (20, 20))
b.myname = "default button"
self.Bind(wx.EVT_BUTTON, self.OnClick, b)

When the button is clicked:

def OnClick(self, event):
    name = event.GetEventObject().myname

Answer 2

Take advantage of what you can do in a language like Python. You can pass extra arguments to your event callback function, like so.

import functools

def __init__(self):
    # ...
    for i in range(10):
        name = 'Button %d' % i
        button = wx.Button(parent, -1, name)
        func = functools.partial(self.on_button, name=name)
        button.Bind(wx.EVT_BUTTON, func)
    # ...

def on_button(self, event, name):
    print '%s clicked' % name

Of course, the arguments can be anything you want.