[Python-ideas] Is this PEP-able? "with" statement inside genexps / list comprehensions
Rhodri James
rhodri at kynesim.co.uk
Tue Jul 31 07:32:00 EDT 2018
On 30/07/18 20:15, Rudy Matela wrote:
> Hello,
>
> Do you think it would be nice to allow with statements inside genexps or
> list comprehensions? The functions __enter__ and __exit__ would be
> automatically called as iterables are traversed. I am thinking of
> drafting a PEP about this. Examples:
I was worried until I twigged that you meant adding a clause rather than
a statement per se. How does this interact with the other clauses in a
comprehension? I'm thinking of monstrosities like:
g = (f.read() for fn in filenames if fn.endswith(".txt") with open(fn)
as f for filenames in get_directory_listing(dir) if .....)
--
Rhodri James *-* Kynesim Ltd
More information about the Python-ideas
mailing list