Revision 1068
Added by Aaron Marcuse-Kubitza almost 13 years ago
util.py | ||
---|---|---|
1 | 1 |
# Useful functions and classes |
2 | 2 |
|
3 |
import collections |
|
4 |
|
|
3 | 5 |
#### Function wrappers for statements |
4 | 6 |
|
5 | 7 |
def noop(*args, **kw_args): pass |
... | ... | |
89 | 91 |
try: subset[key] = dict_[key] |
90 | 92 |
except KeyError: pass |
91 | 93 |
return subset |
94 |
|
|
95 |
class DefaultDict(collections.defaultdict): |
|
96 |
def __init__(self, dict_, default=None): |
|
97 |
collections.defaultdict.__init__(self, lambda: default, dict_) |
|
98 |
|
|
99 |
def dict_subset_right_join(dict_, keys): |
|
100 |
'''Gets a subset of a dict, using None for subset keys that don't exist''' |
|
101 |
return dict_subset(DefaultDict(dict_), keys) |
Also available in: Unified diff
util.py: Added DefaultDict to wrap collections.defaultdict with a simple value passed in the constructor, defaulting to None. Added dict_subset_right_join() to fill in None for subset keys that don't exist.