find_python_version raises TypeError if PYENV_ROOT is set

[mndavidoff]

find_python_version raises TypeError if the PYENV_ROOT environment variable is set.

$ export PYENV_ROOT=~/.pyenv
$ python3
>>> from pythonfinder import Finder
>>> Finder().find_python_version(3)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/mdavidoff/.pyenv/versions/3.7.1/lib/python3.7/site-packages/pythonfinder/pythonfinder.py", line 113, in find_python_version
    return self.system_path.find_python_version(
  File "/home/mdavidoff/.pyenv/versions/3.7.1/lib/python3.7/site-packages/pythonfinder/pythonfinder.py", line 54, in system_path
    ignore_unsupported=self.ignore_unsupported,
  File "/home/mdavidoff/.pyenv/versions/3.7.1/lib/python3.7/site-packages/pythonfinder/models/path.py", line 451, in create
    ignore_unsupported=ignore_unsupported,
  File "<attrs generated init 75e45f144e3d5510d54dd5fca6730b98fa0220a9>", line 38, in __init__
  File "/home/mdavidoff/.pyenv/versions/3.7.1/lib/python3.7/site-packages/pythonfinder/models/path.py", line 116, in __attrs_post_init__
    self._setup_pyenv()
  File "/home/mdavidoff/.pyenv/versions/3.7.1/lib/python3.7/site-packages/pythonfinder/models/path.py", line 196, in _setup_pyenv
    version_glob_path="versions/*", ignore_unsupported=self.ignore_unsupported
  File "/home/mdavidoff/.pyenv/versions/3.7.1/lib/python3.7/site-packages/pythonfinder/models/python.py", line 154, in create
    sort_function=sort_function, version_glob_path=version_glob_path)
  File "<attrs generated init 031499b6371f4a9df9919a42577a7ef217b32ad9>", line 17, in __init__
  File "/home/mdavidoff/.pyenv/versions/3.7.1/lib/python3.7/site-packages/pythonfinder/models/python.py", line 98, in get_versions
    for p in self.get_version_order():
  File "/home/mdavidoff/.pyenv/versions/3.7.1/lib/python3.7/site-packages/pythonfinder/models/python.py", line 70, in get_version_order
    version_order = [versions[v] for v in parse_pyenv_version_order()]
TypeError: 'NoneType' object is not iterable
>>> import pythonfinder
>>> pythonfinder.__version__
'1.1.9.post1'

It works if PYENV_ROOT is not set:

$ unset PYENV_ROOT
$ python3
>>> from pythonfinder import Finder
>>> Finder().find_python_version(3)
PathEntry(path=PosixPath('/home/mdavidoff/.pyenv/versions/3.7.1/bin/python3.7m'), _children={}, is_root=False, only_python=False, name='python3.7m', py_version=PythonVersion(major=3, minor=7, patch=1, is_prerelease=False, is_postrelease=False, is_devrelease=False, is_debug=False, version=<Version('3.7.1')>, architecture=None, comes_from=..., executable=None, name='python3.7m'), _pythons=defaultdict(None, {}))

[jxltom]

It should already be fixed in master branch by #43 and #38

[mndavidoff]

I tried the current version on the master branch. It looks like the problem is indeed fixed. Thanks!

[thedrow]

@mndavidoff Mind closing the issue then?