Re: recursively change values in list of lists

[Maric Michaud]

Le Sunday 24 August 2008 16:17:46 Carson Farmer, vous avez écrit*:

Dear list,

I'm sure this is a relatively trivial problem, but I have been unable
to find any good examples/explanations on how to do this, so here
goes:

I have multi-polygon object, which is simply a list of polygons, where
each polygon is a list of lines, where each line is a list of points.
What I would like to do, is change the x and y values of each point,
all the while keeping the structure of the lists intact.

As you know the structure by advance, this is not a recusive problem :

for polygon in multi :
for line in polygon :
for point in line :
point[0] += x
point[1] += y

So in the end, the only thing that should be changed is the values,
not the lists themselves... clear as mud?

Any hints, and/or suggestions are greatly appreciated,
Carson
--
http://mail.python.org/mailman/listinfo/python-list

--
_____________

Maric Michaud