Mercurial > repos > bjoern-gruening > glimmer_hmm

comparison glimmerHMM/BCBio/GFF/_utils.py @ 0:0a15677c6668 default tip

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author bjoern-gruening
date Wed, 11 Jan 2012 09:58:35 -0500
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-1:000000000000 0:0a15677c6668
1 class defaultdict(dict):
2 """Back compatible defaultdict: http://code.activestate.com/recipes/523034/
3 """
4 def __init__(self, default_factory=None, *a, **kw):
5 if (default_factory is not None and
6 not hasattr(default_factory, '__call__')):
7 raise TypeError('first argument must be callable')
8 dict.__init__(self, *a, **kw)
9 self.default_factory = default_factory
10 def __getitem__(self, key):
11 try:
12 return dict.__getitem__(self, key)
13 except KeyError:
14 return self.__missing__(key)
15 def __missing__(self, key):
16 if self.default_factory is None:
17 raise KeyError(key)
18 self[key] = value = self.default_factory()
19 return value
20 def __reduce__(self):
21 if self.default_factory is None:
22 args = tuple()
23 else:
24 args = self.default_factory,
25 return type(self), args, None, None, self.items()
26 def copy(self):
27 return self.__copy__()
28 def __copy__(self):
29 return type(self)(self.default_factory, self)
30 def __deepcopy__(self, memo):
31 import copy
32 return type(self)(self.default_factory,
33 copy.deepcopy(self.items()))
34 def __repr__(self):
35 return 'defaultdict(%s, %s)' % (self.default_factory,
36 dict.__repr__(self))
37