Support path-like objects

[dmwyatt]

Python 3.6 finally implements PEP 519. This means we can use pathlib.Path instances in standard library methods that expect a string path. For example we can do

a_path = Path('/home/dmwyatt/some_file.txt')
with open(a_path) as f:
    file_contents = f.read()

At a minimum, I recommend supporting passing path-like objects into read_env. You can check if an object is a path-like object by using isinstance(a_path, os.PathLike). In the case of read_env you can probably do isinstance(env_file, (string_types, os.PathLike)). You'd have to special-case for Python 3.6 vs Python <3.6.

Eventually, I think the whole Path class as implemented by this library can go away.

[gabn88]

Does this mean that symlinks are also allowed?

I like to symlink to an .env-example, so that on production not accidentially the .env is read (it requires a manual step of creating the symlink).

[sergeyklay]

This is resolved in develop branch. Thank you for the report, and for helping us make django-environ better. And I am sorry about the delay.