[EMAIL PROTECTED] wrote: > Hallo, > > I'm after > > [[[],[],[],[],[]],[[],[],[],[],[]],[[],[],[],[],[]],[[],[],[],[],[]],[[],[],[],[],[]]] > > (NxN 'grid', 5x5 in that example, and while typing this up i figured out > how to get it, but I'm still not sure what _was_ happening) > > > I'm trying > >>>>> a=[] >>>> row=[ [] for n in range(0,10) ] >>>> a.extend(row[:]) >>>> a > [[], [], [], [], [], [], [], [], [], []] >>>> a[0].extend(row[:]) >>>> a > [[[...], [], [], [], [], [], [], [], [], []], [], [], [], [], [], [], [], > [], []] > > > why isnt that last a > > [[[...]],[],[],[],[],[],[],[],[],[]] > > > Puzzled :) > > Matt. > -- ........
To get an n by m grid I would use [[[] for i in xrange(m)] for j in xrange(n)] -- Robin Becker -- http://mail.python.org/mailman/listinfo/python-list
