>>> len(x._toc)
2
>>> len(x._toc["root"])
3
>>> len(x._toc["irc-clients"])
1

# So, x._toc is some kind of dict or dict-like object.
# And apparently its values are all lists.
# We want to see how many items are in those lists, combined.
tot = 0
for key,value in x._toc.iteritems():
    tot = tot+len(value)