[lxml-dev] context parameter thread safety

[Stefan Behnel]

Hi,

Alex Klizhentas wrote:
> The context is a first parameter in the xpath/xslt extension functions and
> the tutorial states that it can be used to save function state.
> I wonder whether it is thread safe.

It doesn't have to be. XPath evaluations use an instance-local lock per
evaluator, so their context will not be used concurrently. XSLT objects uses a
new context for each evaluation, so there isn't any context concurrency there
either.

Stefan