[Python-ideas] Define __fspath__() for NamedTemporaryFile and TemporaryDirectory

[Thomas Jollans]

On 08/06/17 15:42, Antoine Pietri wrote:
> Hello everyone!
>
> A very common pattern when dealing with temporary files is code like this:
>
>     with tempfile.TemporaryDirectory() as tmpdir:
>         tmp_path = tmpdir.name
>
>         os.chmod(tmp_path)
>         os.foobar(tmp_path)
>         open(tmp_path).read(barquux)

Is it?

py> import tempfile
py> with tempfile.TemporaryDirectory() as tmpdir:
...     print(tmpdir, type(tmpdir))
...
/tmp/tmp2kiqzmi9 <class 'str'>
py>


>
> PEP 519 (https://www.python.org/dev/peps/pep-0519/) introduced the
> concept of "path-like objects", objects that define a __fspath__()
> method. Most of the standard library has been adapted so that the
> functions accept path-like objects.
>
> My proposal is to define __fspath__() for TemporaryDirectory and
> NamedTemporaryFile so that we can pass those directly to the library
> functions instead of having to use the .name attribute explicitely.
>
> Thoughts? :-)
>

-- 
Thomas Jollans

m ☎ +31 6 42630259
e ✉ tjol at tjol.eu