Why does pathlib not have is_readable() & things like that?

[Jussi Piitulainen]

Adam Funk writes:

> On 2016-04-28, Grant Edwards wrote:
>>
>> Then open the output file before you do the GET.
>
> I guess I could, but fetching the data actually involves a whole lot
> of GET requests (the first one includes cross-references to the URLs
> where the rest of the data is found), some BeautifulSoup processing, &
> a lot of other processing to produce a big dict, which I then write
> out as json using what I think is the best way (output_file is an
> instance of pathlib.Path):
>
>     with output_file.open(mode='w', encoding='UTF-8', errors='replace')  as f:
>         json.dump(output, f, sort_keys=True, indent=2)

It doesn't matter how much work it actually is. Make it conceptually a
single unit:

def get_output(): ...

with output_file.open(mode='w',
                      encoding='UTF-8',
                      errors='replace')  as f:
    output = get_output()
    json.dump(output, f,
              sort_keys=True,
              indent=2)

>> Or just do os.access("directory/where/you/want/to/open/a/file",os.W_OK)
>
> That's what I'm doing now, but I prefer to give the user the error
> message early on.

Then do that early on.