Hi all
I use a dictionary as a cache, and I thought that I could replace it
with collections.defaultdict, but it does not work the way I expected
(python 3.3.0).
my_cache = {}
def get_object(obj_id):
if obj_id not in my_cache:
my_object = fetch_object(obj_id) # expensive operation
my_cache[obj_id] = my_object
return my_cache[obj_id]
my_obj = get_object('a')
I thought I could replace this with -
from collections import defaultdict
my_cache = defaultdict(fetch_object)
my_obj = my_cache['a']
It does not work, because fetch_object() is called without any arguments.
It is not a problem, but it would be neat if I could get it to work. Am
I missing anything?
Frank Millman
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