You should expand a bit. How is that better than
with open(..) as a, open(..) as b:
?
> On 12 Jul 2019, at 15:27, haael <ha...@interia.pl> wrote:
>
>
> Could we add __enter__ and __exit__ to the tuple type?
>
> Look at the following code:
>
>
> a = open('a.tmp', 'w')
> b = open('b.tmp', 'w')
>
> with (a, b) as (af, bf):
> af.write("1")
> bf.write("2")
>
>
>
>
> Even better example:
>
>
> with tuple(open(str(_n) + '.tmp', 'w') for _n in range(1000)) as f:
> for n, fn in enumerate(f):
> f.write(str(n))
>
>
>
>
> Tuple as context manager would invoke __enter__ for each of its elements and
> return a tuple of the results.
>
> On exit, the __exit__ method would be invoked for every element.
>
>
> We could even generalize it to every kind of iterable.
>
> This is somewhat consistent with treatment of exception types in 'except'
> clause.
>
>
> try:
> something()
> except Exception1 as error:
> handlerA(error)
> except (Exception2, Exception3) as error:
> handlerB(error)
>
>
>
> Tuple of exception types is accepted in 'except' clause, as well as a single
> exception type. We could apply that rule to the 'with' clause.
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