Christopher Subich wrote: > Peter Otten wrote: > > > > def add_freqs3(freq1, freq2): > > total = dict(freq1) > > for key, value in freq2.iteritems(): > > try: > > total[key] += value > > except KeyError: > > total[key] = value > > return total > > > > Untested, but replacing the try/except pair with the following should be > semantically equivalent and a bit faster: > > total[key] = total.get(key,0) + value Would that have a performance impact as it seems that key needs to be hashed twice or may be += also need to do it twice ? Just curious.
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