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Groups > comp.lang.python > #102930
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| From | Chris Angelico <rosuav@gmail.com> |
| Newsgroups | comp.lang.python |
| Subject | Re: How to properly override the default factory of defaultdict? |
| Date | Mon, 15 Feb 2016 12:04:20 +1100 |
| Lines | 13 |
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On Mon, Feb 15, 2016 at 11:17 AM, Herman <sorsorday@gmail.com> wrote:
> I want to pass in the key to the default_factory of defaultdict and I found
> that defaultdict somehow can intercept my call to dict.__getitem__(self,
> key), so my class's __getitem__ have to catch a TypeError instead instead
> of KeyError. The following class is my code:
Save yourself a lot of trouble, and just override __missing__:
class DefaultDictWithEnhancedFactory(collections.defaultdict):
def __missing__(self, key):
return self.default_factory(key)
ChrisA
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Re: How to properly override the default factory of defaultdict? Chris Angelico <rosuav@gmail.com> - 2016-02-15 12:04 +1100
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