I would like to get everyone's thoughts on two new dictionary methods:
def count(self, value, qty=1): try: self[key] += qty except KeyError: self[key] = qty
def appendlist(self, key, *values): try: self[key].extend(values) except KeyError: self[key] = list(values)
The rationale is to replace the awkward and slow existing idioms for dictionary based accumulation:
d[key] = d.get(key, 0) + qty d.setdefault(key, []).extend(values)
<SNIP>
Hi all,
I am *far* less experienced with Python and programming than those who've weighed in as yet.
I quite like count, though I agree with posts up thread that `count' might not be the best name.
For appendlist, I would have expected
def appendlist(self, key, sequence):
try:
self[key].extend(sequence)
except KeyError:
self[key] = list(sequence)I am, however, very open to the possibility that this says more about my level of experience than it does about which way is best :-)
Best to all,
Brian vdB
-- http://mail.python.org/mailman/listinfo/python-list
