[Tutor] try & except

[Magnus Wirström]

Hi

I'm playing around with try: and except: i have a code like this
        try:
            bibl=os.listdir("c:\\klientdata\\")
        except:
            wx.MessageBox("Kunde inte läsa käll 
biblioteket.","Säkerhetskopiering",wx.OK|wx.ICON_ERROR)

(yeah ... it's swedish :) )

So far i get how to use it but i would like to be able to execute the 
try block again after it jumped to the exception. How can i make it 
retry to read the directory?
Thanks
Magnus