def useless_decorator(fn):
return decorate(UselessDecorator)(fn)
def dirty(self, *args):
try:
del self._cache[args]
except KeyError:
pass
def __call__(self, *args):
try:
return self._cache[args]
except KeyError:
value = self.fn(*args)
self._cache[args] = value
return value
cached = decorate(CacheDecorator)
i = 0
@cached
def f(a, b):
global i
i += 1
return a + b + i
class CachedMethods(object):
@cached
def f(self, a, b):
global i