Let’s get back to the last post and check one line we entered

self.motif_width = wx.TextCtrl(panel, -1, '10', (95, 50), (40,18))

There is something in this line that I did not explain. The third parameter in the test box declaration is '10'. How does this affect our box? That’s the default text that will be displayed inside the box as soon as it is created. In our case, 10 is the motif width, and it’s the value we consider to be the most common search width.

Another aspect not explained is the run_finder. We added a line 

wx.MessageBox('It should run, eh?')

where we declare a wx.MessageBox. What is it? A message box is the usual error/information dialog that you see in most programs. In our case it is very simple, just a warning/reminder that we need to include some code there.

Next time we will connect some Python source files and make our script find some motifs.