[Python-ideas] `to_file()` method for strings

[Chris Barker]

On Mon, Mar 28, 2016 at 8:54 AM, Émanuel Barry <vgr255 at live.ca> wrote:

> I wonder how reasonable it would be to add a new keyword to open that
> would .close() the file object upon a single write/read. Consider:
>
>
>
> data = open("foo.txt", "r", close_after_use=True).read()
>
>
it makes it a tiny bit shorter than  using "with", but doesn't solve Nick's
mental model issue -- the user still needs to be thinking about the fact
that they are creating a file object and that it needs to be closed when
you are done with it.

and I"m not sure how you would define "use" -- any i.o. opeartion? i.e.:

infile = open("foo.txt", "r", close_after_use=True)
first_line = infile.readline()

now what is the state of infile? a closed file object?

exactly why context managers were introduced:

with open("foo.txt", "r", close_after_use=True) as infile:
    first_line = infile.readline()

something_else...

now it's pretty clear that infile is no longer a useful object.

-CHB



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Christopher Barker, Ph.D.
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