[Python-Dev] PEP 550 v4 (original) (raw)
Yury Selivanov yselivanov.ml at gmail.com
Mon Aug 28 11:26:51 EDT 2017
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On Sat, Aug 26, 2017 at 4:45 PM, francismb <francismb at email.de> wrote: [..]
it's by design that the execution context for new threads to be empty or should it be possible to set it to some initial value? Like e.g:
var = newcontextvar('init') def sub(): assert var.lookup() == 'init' var.set('sub') def main(): var.set('main') thread = threading.Thread(target=sub) thread.start() thread.join() assert var.lookup() == 'main'
Yes, it's by design.
With PEP 550 APIs it's easy to subclass threading.Thread or concurrent.futures.ThreadPool to make them capture the EC.
Yury
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