Patrick Maupin wrote:
On Apr 2, 1:21 pm, Ethan Furman <et...@stoneleaf.us> wrote:
For this type of situation, my preference would be:
class spam(object):
def __call__(self, x, y, z):
try:
mongo = self.mongo
except AttributeError:
mongo = self.mongo = heavy_lifting_at_runtime()
return frobnicate(x, y, z, mongo)
spam = spam()
No extra objects, out-of-place underscores, etc.
~Ethan~
Well, I'm not a big fan of unnecessary try/except, so I would at least
change it to:
class spam(object):
def __getattr__(self, name):
if name != 'mongo':
raise AttributeError
self.mongo = heavy_lifting_at_runtime()
return self.mongo
def __call__(self, x, y, z):
return frobnicate(x, y, z, self.mongo)
spam = spam()
Regards,
Pat
Sounds like a personal preference issue, rather than a necessary /
unnecessary issue -- after all, if you call that function a thousand
times, only once is mongo not defined... clearly the exception. ;)
~Ethan~
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