Sorry, Kirby, I'm afraid I disagree.
try:
res_dict[ext] += 1
except KeyError:
res_dict[ext] = 1
is clear in intent and operation. It is a self-initializing occurrence counter.
On the other hand,
res_dict[ext] = res_dict.get(ext, 0) + 1
is obscure. Unless I go dig up the documentation of what the .get()
operation does on a dictionary, I have no idea what the intention of
the code is -- and I am (humbly) a very experienced programmer and
Python programmer. Also I doubt whether the one-line version is
faster. Without looking at the code, I would bet that .get() is
implemented using a try / except structure. There is nothing wrong
with that.
Remember the Zen of Python:
>>>import this
...
Readability counts.
...
--
Vernon
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