Mercurial > piecrust2
annotate piecrust/decorators.py @ 0:a212a3f2e3ee
Initial commit.
| author | Ludovic Chabant <ludovic@chabant.com> |
|---|---|
| date | Sat, 21 Dec 2013 14:44:02 -0800 |
| parents | |
| children |
| rev | line source |
|---|---|
| 0 | 1 import functools |
| 2 | |
| 3 | |
| 4 def lazy(f): | |
| 5 @functools.wraps(f) | |
| 6 def lazy_wrapper(*args, **kwargs): | |
| 7 if f.__lazyresult__ is None: | |
| 8 f.__lazyresult__ = f(*args, **kwargs) | |
| 9 return f.__lazyresult__ | |
| 10 | |
| 11 f.__lazyresult__ = None | |
| 12 return lazy_wrapper | |
| 13 | |
| 14 | |
| 15 def lazy_property(f): | |
| 16 return property(lazy(f)) | |
| 17 |