Is it true that Path('file').read_text() closes the file after the read?
I think that is the sort of functionality that Ken is asking for.
It's not clear to me by your linked documentation that it does. If it
does, maybe that should be made more clear in that linked documentation?
(Of course, maybe it's written there somewhere and I'm just blind...)
Cheers,
Thomas
On 08/02/2018 11:53 AM, Paul Moore wrote:
On Thu, 2 Aug 2018 at 10:39, Ken Hilton <kenlhil...@gmail.com> wrote:
With expressions allow using the enter/exit semantics of the with statement
inside an expression context. Examples:
contents = f.read() with open('file') as f #the most obvious one
multiplecontents = [f.read() with open(name) as f for name in names]
#reading multiple files
I don't know if it's worth making the "as NAME" part of the with mandatory in
an expression - is this a valid use case?
data = database.selectrows() with threadlock
Where this would benefit: I think the major use case is `f.read() with
open('file') as f`. Previous documentation has suggested `open('file').read()`
and rely on garbage collection; as the disadvantages of that became obvious, it
transitioned to a method that couldn't be done in an expression:
That use case is satisfied by pathlib:
Path('file').read_text()
see https://docs.python.org/3.7/library/pathlib.html#pathlib.Path.read_text
Are there any other use cases? I don't see any real advantage here
other than the non-advantage of being able to write one-liners.
Paul
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