+++ /dev/null
-#! python
-
-import collections
-
-class defaultdict(dict):
- def __init__(self, default_factory):
- self.default_factory = default_factory
- def __missing__(self, key):
- if self.default_factory is None:
- raise KeyError(key)
- self[key] = value = self.default_factory()
- return value
- def __getitem__(self, key):
- try:
- return dict.__getitem__(self, key)
- except KeyError:
- return self.__missing__(key)
-
-if not hasattr(collections, 'defaultdict'):
- collections.defaultdict = defaultdict