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Alex Rivera
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I'm trying to use map() on the dict_values object returned by the values() function on a dictionary. However, I can't seem to be able to map() over a dict_values : map(print, h.values()) Out[31]: <builtins.map at 0x1ce1290> I'm sure there's an easy way to do this. What I'm actually trying to do is create a set() of all the Counter keys in a dictionary of Counters , doing something like this: # counters is a dict with Counters as values whole_set = set() map(lambda x: whole_set.update(set(x)), counters.values()) Is there a better way to do this in Python?
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