Hi all,
I have a list that I'm iterating over, and during the iteration items
are appended. Moreover, it is iterated over in two nested loops. If
the inner loop comes to the end, I want the outer loop to append an
item. Is there a way to do this? Because once an iterator has raised a
StopIteration, it can not go to a next item anymore.
Aside question: is there a rationale for the current behavior? To me
it seems more natural to continue iteration after appending new items.
I want to use it for a graph walk.
nodes is a list of all nodes,
edges is an on the fly constructed list of edges in the order of
visiting,
initial_nodes is a list of (root) nodes
edges = []
edge_it = iter(edges)
for node in initial_nodes:
edges += node.leaving_edges
try:
while True:
edge = edge_it.next()
edges += edge.head.leaving_edges
except StopIteration:
pass
Thanks in advance, cheers, Roald
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