Derek Peschel wrote: > At the moment I only need to invert dicts and lists. Is subclassing dict > and list considred good style?
if it makes sense for your application, sure.
however, it might be more convenient to just use a simple type check
(e.g. looking for items) to distinguish between "normal mappings" and
"normal sequences".
try:
items = obj.items()
except AttributeError:
items = enumerate(obj) # assume it's a sequence
</F>
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