Revert "Remove ensure_is_path, no longer required after dropping Python 3.4." and "Drop support for Python 3.4."; Closes #104

This reverts commit 32127a5 and 760c9e1.

Author: jaraco

importlib_metadata/__init__.py

@@ -27,6 +27,7 @@
     ModuleNotFoundError,
     MetaPathFinder,
     email_message_from_string,
+    ensure_is_path,
     PyPy_repr,
     )
 from importlib import import_module
@@ -219,7 +220,7 @@ def at(path):
         :param path: a string or path-like object
         :return: a concrete Distribution instance for the path
         """
-        return PathDistribution(pathlib.Path(path))
+        return PathDistribution(ensure_is_path(path))
 
     @staticmethod
     def _discover_resolvers():

importlib_metadata/_compat.py

@@ -115,6 +115,15 @@ def py2_message_from_string(text):  # nocoverpy3
 PYPY_OPEN_BUG = getattr(sys, 'pypy_version_info', (9, 9, 9))[:3] <= (7, 1, 1)
 
 
+def ensure_is_path(ob):
+    """Construct a Path from ob even if it's already one.
+    Specialized for Python 3.4.
+    """
+    if (3,) < sys.version_info < (3, 5):
+        ob = str(ob)  # pragma: nocover
+    return pathlib.Path(ob)
+
+
 class PyPy_repr:
     """
     Override repr for EntryPoint objects on PyPy to avoid __iter__ access.

setup.cfg

@@ -15,11 +15,11 @@ classifiers =
     Programming Language :: Python :: 2
 
 [options]
-python_requires = >=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*
+python_requires = >=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*
 setup_requires = setuptools-scm
 install_requires =
     zipp>=0.5
-    pathlib2; python_version < '3'
+    pathlib2; python_version=='3.4.*' or python_version < '3'
     contextlib2; python_version < '3'
     configparser>=3.5; python_version < '3'
 packages = find:

tox.ini

@@ -33,7 +33,7 @@ setenv =
     cov: COVERAGE_OPTIONS="-p"
     cov: COVERAGE_FILE={toxinidir}/.coverage
     py27: PYV=2
-    py35,py36,py37,py38: PYV=3
+    py34,py35,py36,py37,py38: PYV=3
     # workaround deprecation warnings in pip's vendored packages
     PYTHONWARNINGS=ignore:Using or importing the ABCs:DeprecationWarning:pip._vendor
 extras =