Craig Yoshioka wrote:
>It is a bit non-normal. but I think this is a good use case as I want to
>create a very simple-to-use system for non-python experts to safely wrap their
>CLI programs in a caching architecture... that's why I lament the inability to
>not use the more streamlined 'with' syntax- abusing the for loop might just
>be confusing. The with statement is also a good fit because the caching
>strategy does have to atomically acquire, create and release the appropriate
>locks. With this statement the cached CLI wrappers can be called from
>simultaneously from different scripts and still coordinate their activity, by
>waiting for each other to finish, and reusing the cached results, etc.
> with cachingcontext(x):
> # create cached resources here
> # return cached resources
On a separate note, how would you even return the cached resources without
using the following ?
with cachingcontext(x) as blah:
The only thing cachingcontext seems to do is catch errors and since
cachingcontext would be used by the "non-python experts",
I have trouble understanding how this would help them any more than:
try:
# create cached resources here
except SomeError:
# handle error
If you return the cached resources outside the caching context than how could
you possibly release it
via the context manager? It seems like you want some kind of resource pooling
but if that is the
case then just write your own pool.
See
http://stackoverflow.com/questions/1514120/python-implementation-of-the-object-pool-design-pattern
.
Sorry if that does not help, but I do not comprehend what you are trying to do.
It seems inherently
conflicted to say you want to use "with" because it lets you atomically open,
use, then close resources
but you do NOT want to atomically open, use, then close resources...
Ramit
Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology
712 Main Street | Houston, TX 77002
work phone: 713 - 216 - 5423
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