Overhaul pythonfinder (#135)

* Overhaul pythonfinder to use pydantic and eliminate the WindowsFinder code paths; remove attrs library.

* add missing file

* Corrected imports

* addressing build error

* address import issue with tests

* address import issue with tests

* Try casting to Path in test

* Try casting to PythonFinder in test

* remove not necessary validator that may be causing test failures.

* Refactor imports based on pydantic bug report.

* apply simiilar fix to this test

* remove nonexistent method.

* Remove unused class

* iterate on last two tests

* factor tests away from importlib

* Assertion was checking that it mocked itself.

* Remove confusing and bad test cases

* PR feedback

Author: matteius

setup.cfg

@@ -37,9 +37,9 @@ package_data =
     LICENSE*
     README*
 install_requires =
-    attrs
     cached-property
     packaging>=22.0
+    pydantic>=1.10.7
 
 [options.packages.find]
 where = src
@@ -113,7 +113,7 @@ skip = src/pythonfinder/_vendor
 line_length = 90
 indent = '    '
 multi_line_output = 3
-known_third_party = attr,cached_property,click,invoke,packaging,parver,pytest,requests,setuptools,six,towncrier
+known_third_party = cached_property,click,invoke,packaging,parver,pydantic,pytest,requests,setuptools,six,towncrier
 known_first_party = pythonfinder,tests
 combine_as_imports=True
 include_trailing_comma = True

src/pythonfinder/__init__.py

@@ -1,19 +1,8 @@
-# Add NullHandler to "pythonfinder" logger, because Python2's default root
-# logger has no handler and warnings like this would be reported:
-#
-# > No handlers could be found for logger "pythonfinder.models.pyenv"
-from __future__ import annotations
-
-import logging
-
 from .exceptions import InvalidPythonVersion
-from .models import SystemPath, WindowsFinder
+from .models import SystemPath
 from .pythonfinder import Finder
 
 __version__ = "1.3.3.dev0"
 
 
-logger = logging.getLogger(__name__)
-logger.addHandler(logging.NullHandler())
-
-__all__ = ["Finder", "WindowsFinder", "SystemPath", "InvalidPythonVersion"]
+__all__ = ["Finder", "SystemPath", "InvalidPythonVersion"]