> >array in python but a list. What I'd like to do is something to the > >effect of: > > > >data = [data1[], data2[], data3[]] > > data1 = [] data2 = [] data3 = [] data = [data1, data2, data3] Or even: data = [ [], [], [] ] data[0].append(1) #-> [ [1], [], [] ] etc. Alan G Author of the Learn to Program web tutor http://www.freenetpages.co.uk/hp/alan.gauld