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:
This
g = (f.read() for fn in filenames with open(fn) as f)
would be equivalent to the following use of a generator function:
def __gen():
for fn in filenames:
with open(fn) as f:
yield f.read()
g = __gen()
This
list = [f.read() for fn in filenames with open(fn) as f]
would be equivalent to the following:
list = []
for fn in filenames:
with open(fn) as f:
list.append(f.read())
--
Rudy
_______________________________________________
Python-ideas mailing list
Python-ideas@python.org
https://mail.python.org/mailman/listinfo/python-ideas
Code of Conduct: http://python.org/psf/codeofconduct/
