On 5 January 2018 at 11:06, Victor Stinner <victor.stinner at gmail.com> wrote: >> Le 5 janv. 2018 11:42 AM, "Paul Moore" <p.f.moore at gmail.com> a écrit : >> """ >> A Context is a mapping from ContextVar objects to their values. The >> Context itself exposes the Mapping interface, so cannot be modified >> directly - to modify the value associated with a variable you need to >> use the ContextVar.set() method. >> """ >> >> Does that explain things correctly? One thing I am sure of is that we >> should remove "implemented using an immutable dictionary" - it's an >> implementation detail, and adds nothing but confusion to mention it >> here. > You can only modify a context when it's the current context, so using > ContextVar.set() in Context.run(). Thanks. That's a useful qualification. But it may be too detailed for the summary - it's certainly something that should be covered in the specification section, though. Maybe "... you need to use the ContextVar.set() method from Context.run()" would be OK, although I don't want the summary to get too long. Paul
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