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LWN.net Weekly Edition for May 23, 2013
An "enum" for Python 3
An unexpected perf feature
LWN.net Weekly Edition for May 16, 2013
A look at the PyPy 2.0 release
A more portable approach with essentially no downsides is to pass the fd of a pipe to your recipient process, and use its blocking behaviour when empty to implement your semaphore.
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