On 29 mayo, 17:45, Gary Herron <[EMAIL PROTECTED]> wrote: > [EMAIL PROTECTED] wrote: > > Hi, > > > i am using a software which uses python as its scripting language. I > > want to generate a list of coordinates more or less this way: > > > for i in (beg, end, step): > > for j in (beg, end, step): > > for k in (beg, end, step): > > ......... > > > Coords = ((i1,j1,k1), (i2,j2,k2), ...,(in,jn.kn)) > > Your statement of the problem makes it look like all three coordinates > cover the same sequence of values. Is that true? Or does i's range > (beg, end, step) differ from j's and k's. If they differ, are they > all the same length? > > You pseudo-code makes it look like you want all combinations, but your > sample output does not indicate that. Which is it, [(1,1,1), (2,2,2)] > or [(1,1,1), (1,1,2),(1,2,1),(1,2,2), ...]? > > Depending on the answers to those questions, one of the following list > comprehensions may demonstrate how to achieve a solution. > > >>> a = range(2,6,2) > >>> b = range(3,7,2) > >>> c = range(10,14,2) > >>> print a,b,c > [2, 4] [3, 5] [10, 12] > >>> [(i,j,k) for i,j,k in zip(a,b,c)] # Using zip process three lists > in lock-step > [(2, 3, 10), (4, 5, 12)] > >>> [(i,j,k) for i in a for j in b for k in c] #Nested loop give > all possible combos. > [(2, 3, 10), (2, 3, 12), (2, 5, 10), (2, 5, 12), (4, 3, 10), (4, 3, 12), > (4, 5, 10), (4, 5, 12)] > >>> > > Gary Herron > > > > > > > Can anyone give me some advice on how to achieve this ? I got a little > > idea, but still need to keep working til i get it. Thanks in advance, > > > Victor > > -- > >http://mail.python.org/mailman/listinfo/python-list- Ocultar texto de la > >cita - > > - Mostrar texto de la cita -
Hi , i have another question. What if i wanted to make n tuples, each with a list of coordinates. For example : coords = list() for h in xrange(1,11,1): for i in xrange(1, 5, 1) : for j in xrange(1, 5, 1) : for k in xrange(1,2,1) : coords.append((i,j,k)) lista+str(h)= tuple coords print tuple(coords) so that i will have tuple1, tuple2,..., tupleN, etc. I am trying to do it the way i show you above but it is not working properly. I wish you could help me with that. Thanks again, -- http://mail.python.org/mailman/listinfo/python-list