python <w.g.sned...@gmail.com> writes:
> tag23gr is a list of lists each with two items.
> g23tag is an empty dictionary when I run the for loop below.
> When is is complete each key is a graphic name who's values are a list
> of tags.
>
> for item in tag23gr:
> ... value, key = tuple(item)
> ... if(g23tag.get(key)):
> ... g23tag[key].append(value)
> ... else:
> ... g23tag[key] = [value]
for item in tag23gr:
g23tag.setdefault(item[0],[]).append(item[1])
-- Alain.
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