Note that: sum(a,[]) gets incredibly slow when a contains a lot of lists (it's
runtime complexity is kwadratic in the number of lists in a). So it's better to
do:
l=[]
for i in A:
l.extend(i)-- To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
