Ask Your Question

Revision history [back]

click to hide/show revision 1
initial version

If n is your number of vertices, you can for instance create a list of n empty lists as follows:

sage: L = [[] for _ in range(n)]

And then you can access the (empty) list number i (for i from 0 to n-1) using:

sage: L[i]
sage: L[i].append(0)
sage: L[i]