[Python-ideas] Make "yield" inside a with statement a SyntaxError

[Rhodri James]

On 08/08/18 16:55, Oscar Benjamin wrote:
> Thinking about this some more: closing() can ensure finalisation but
> it is still generally bad to yield from a with block. Some context
> managers are designed to temporarily alter global state between
> __enter__ and __exit__ - this can be very confusing if you use them
> around a yield block.

Yes, but those sorts of context managers need to be used with care in 
all sorts of circumstances.  Fiddling with global state is always fraught.

-- 
Rhodri James *-* Kynesim Ltd