On 2006-08-20 07:18:44, Rhamphoryncus wrote: >> shallow = [] >> [shallow.extend(i) for i in deep] > > I'm sure this has been mentioned before, but listcomps are for when you > want to store the list and use it for further things, not for when you > want a side effect. TOOWTDI. Can you please explain what you mean with this, and maybe why? Thanks, Gerhard