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

[Alexandre Brault]

On 2017-06-16 04:21 PM, Ethan Furman wrote:
> On 06/16/2017 10:36 AM, Thomas Jollans wrote:
>> 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>
>
> Interesting...  on 3.4 and 3.5 I get:
>
> --> import tempfile
>
> --> tempfile.TemporaryDirectory()
> <TemporaryDirectory '/tmp/tmpy32czx2v'>
>
> --> with tempfile.TemporaryDirectory() as tmpdir:
> ...   tmpdir
> ...
> '/tmp/tmpo63icqfe'
>
> So a <TemporaryDirectory> if used directly, and a <str> if used as a
> context manager.  I don't have a copy of 3.6 nor the future 3.7 handy,
> so maybe it changed there?
>
> -- 
> ~Ethan~
The code in master has the context manager return `self.name`. This
behaviour has (based on looking at the 3.2 tag where TemporaryDirectory
was added) always been used.

Alex