Python mouse EVT_COMMAND_LEFT_CLICK, EVT_LEFT_DOWN

[SMALLp]

Hy!
I'm not able to tu bind mouse click event. Code:

class MouseClass(wx.Panel):
	def __init__(self, parent, id):

		wx.Panel.__init__(self, parent, id, size=(500, 300))
		self.SetBackgroundColour("WHITE")

		sizer = wx.BoxSizer(wx.VERTICAL)

		testPanel.SetBackgroundColour("BLACK")
		self.Bind(wx.EVT_COMMAND_LEFT_CLICK, self.open, id=testPanel.GetId())
		sizer.Add(testPanel, 0, wx.EXPAND)
		self.SetSizerAndFir(sizer)

	def open(self, event):
		print "yea"

U  tried EVT_LEFT_DOWN as I found on goofle and couldnt get it to work. 
Please help.