Bug fix, Python version deprecations, build fixes, version 1.0.0

.coveragerc

@@ -12,4 +12,5 @@ exclude_lines =
     if sys.version_info.+
     raise NotImplementedError
     except ImportError:
+    except \(ImportError, KeyError\):
     .*# nocoverage.*

.travis.yml

@@ -5,27 +5,23 @@ cache: pip
 
 matrix:
   include:
-    - python: "2.7"
-      env: TOXENV=py27-acceptance
-    - python: "3.3"
-      env: TOXENV=py33-acceptance
-    - python: "3.4"
-      env: TOXENV=py34-acceptance
     - python: "3.5"
       env: TOXENV=py35-acceptance
     - python: "3.6"
       env: TOXENV=py36-acceptance
-    - python: "2.7"
-      env: TOXENV=py27-unit
-    - python: "3.3"
-      env: TOXENV=py33-unit
-    - python: "3.4"
-      env: TOXENV=py34-unit
+    - python: "3.7"
+      env: TOXENV=py37-acceptance
+    - python: "3.8"
+      env: TOXENV=py38-acceptance
     - python: "3.5"
       env: TOXENV=py35-unit
     - python: "3.6"
       env: TOXENV=py36-unit
-    - python: "2.7"
+    - python: "3.7"
+      env: TOXENV=py37-unit
+    - python: "3.8"
+      env: TOXENV=py38-unit
+    - python: "3.7"
       env: TOXENV=docs
 
 install:

CHANGES.rst

@@ -1,6 +1,21 @@
 Changelog
 =========
 
+1.0.0 (2019-10-27)
+------------------
+
+**Important:** in keeping with the scheduled end-of-life of various Python versions, versionfinder now only officially supports Python 3.5 or greater. A DeprecationWarning will be generated when run with versions before 3.5, and they are no longer tested.
+
+* Fix `Issue #7 <https://github.com/jantman/versionfinder/issues/7>`_ where certain new versions of pip throw an AttributeError on import if running in Lambda (or other environments where ``sys.stdin`` is ``None``).
+* Stop testing Python 3.3 and drop official support for it.
+* Stop testing Python 2.7 and 3.4.
+* Add DeprecationWarnings for any Python version < 3.5.
+* Multiple pip10 fixes.
+* Test fixes:
+
+  * Always install latest versions of ``coverage`` and ``pytest``.
+  * Switch docs build to py37
+  * Begin testing under py37 and py38
 
 0.1.3 (2018-03-18)
 ------------------

README.rst

@@ -49,8 +49,9 @@ tag or commit from a git repo, or has local changes not committed to git.
 Requirements
 ------------
 
-* Python 2.7, or Python 3.3+. Python 3.0-3.2 is not supported. Python 2.6 should
-  function, but will not return detailed git information and is not tested.
+* Python 2.7, or Python 3.4+. Python 3.0-3.2 is not supported. Python 3.3 was supported
+  but is no longer tested. Python 2.6 might function, but will not return detailed
+  git information and is not tested.
 
 Usage
 -----
@@ -164,7 +165,7 @@ Guidelines
 Testing
 -------
 
-Testing is done via `pytest <http://pytest.org/latest/>`_, driven by `tox <https://tox.readthedocs.org/>`_.
+Testing is done via `pytest <https://docs.pytest.org/en/latest/>`_, driven by `tox <https://tox.readthedocs.org/>`_.
 
 * testing is as simple as:
 

docs/source/versionfinder.rst

@@ -2,9 +2,9 @@ versionfinder package
 =====================
 
 .. automodule:: versionfinder
-    :members:
-    :undoc-members:
-    :show-inheritance:
+   :members:
+   :undoc-members:
+   :show-inheritance:
 
 Submodules
 ----------
@@ -14,4 +14,3 @@ Submodules
    versionfinder.version
    versionfinder.versionfinder
    versionfinder.versioninfo
-

docs/source/versionfinder.version.rst

@@ -2,6 +2,6 @@ versionfinder.version module
 ============================
 
 .. automodule:: versionfinder.version
-    :members:
-    :undoc-members:
-    :show-inheritance:
+   :members:
+   :undoc-members:
+   :show-inheritance:

docs/source/versionfinder.versionfinder.rst

@@ -2,6 +2,6 @@ versionfinder.versionfinder module
 ==================================
 
 .. automodule:: versionfinder.versionfinder
-    :members:
-    :undoc-members:
-    :show-inheritance:
+   :members:
+   :undoc-members:
+   :show-inheritance:

docs/source/versionfinder.versioninfo.rst

@@ -2,6 +2,6 @@ versionfinder.versioninfo module
 ================================
 
 .. automodule:: versionfinder.versioninfo
-    :members:
-    :undoc-members:
-    :show-inheritance:
+   :members:
+   :undoc-members:
+   :show-inheritance:

setup.py

@@ -42,12 +42,11 @@
     long_description = fh.read()
 
 classifiers = [
-    'Development Status :: 4 - Beta',
+    'Development Status :: 5 - Production/Stable',
     'Intended Audience :: Developers',
     'License :: OSI Approved :: GNU Lesser General Public License v3 (LGPLv3)',
     'Operating System :: OS Independent',
     'Programming Language :: Python',
-    'Programming Language :: Python :: 2.7',
     'Programming Language :: Python :: 3',
     'Topic :: Software Development',
     'Topic :: Software Development :: Libraries',

tox.ini

@@ -1,14 +1,13 @@
 [tox]
-envlist = {py27,py33,py34,py35,py36}-{unit,acceptance},docs
+envlist = {py35,py36,py37,py38}-{unit,acceptance},docs
 
 [testenv]
 deps =
   cov-core
   execnet
   pep8
   py
-  py33: pytest<3.3.0
-  {py27,py34,py35,py36}-{unit,acceptance}: pytest>=3.3.0
+  pytest
   pytest-cache
   pytest-cov
   pytest-pep8
@@ -19,8 +18,7 @@ deps =
   requests
   virtualenv
   backoff
-  py36: coverage
-  {py27,py33,py34,py35}-{unit,acceptance}: coverage==3.7.1
+  coverage
 
 passenv=TRAVIS*
 setenv =
@@ -52,7 +50,7 @@ deps =
   pygments
   sphinx
   sphinx_rtd_theme
-basepython = python2.7
+basepython = python3.7
 commands =
     python --version
     virtualenv --version

versionfinder/tests/test_acceptance.py

@@ -221,7 +221,7 @@ def _set_git_config(self, set_in_travis=False):
                 'config',
                 'user.email'
             ]).strip()
-        except subprocess.CalledProcessError as ex:
+        except subprocess.CalledProcessError:
             res = None
         if res != '' and res is not None:
             print("Got git config user.email as %s" % res)

versionfinder/tests/test_versionfinder.py

@@ -710,9 +710,9 @@ def test_find(self):
             req='foo==4.5.6'
         )
 
-        with patch('%s.pip.get_installed_distributions' % pbm
+        with patch('%s.get_installed_distributions' % pbm
                    ) as mock_pgid:
-            with patch('%s.pip.FrozenRequirement.from_dist' % pbm
+            with patch('%s.FrozenRequirement.from_dist' % pbm
                        ) as mock_from_dist:
                 with patch('%s._dist_version_url' % pb) as mock_dist_vu:
                     mock_pgid.return_value = installed_dists
@@ -734,9 +734,9 @@ def test_no_dist(self):
             req='awslimitchecker==0.1.0'
         )
 
-        with patch('%s.pip.get_installed_distributions' % pbm
+        with patch('%s.get_installed_distributions' % pbm
                    ) as mock_pgid:
-            with patch('%s.pip.FrozenRequirement.from_dist' % pbm
+            with patch('%s.FrozenRequirement.from_dist' % pbm
                        ) as mock_from_dist:
                 with patch('%s._dist_version_url' % pb) as mock_dist_vu:
                     mock_pgid.return_value = installed_dists
@@ -760,9 +760,9 @@ def test_req_https(self):
             req=req_str
         )
 
-        with patch('%s.pip.get_installed_distributions' % pbm
+        with patch('%s.get_installed_distributions' % pbm
                    ) as mock_pgid:
-            with patch('%s.pip.FrozenRequirement.from_dist' % pbm
+            with patch('%s.FrozenRequirement.from_dist' % pbm
                        ) as mock_from_dist:
                 with patch('%s._dist_version_url' % pb) as mock_dist_vu:
                     mock_pgid.return_value = installed_dists
@@ -787,9 +787,9 @@ def test_req_git(self):
             req=req_str
         )
 
-        with patch('%s.pip.get_installed_distributions' % pbm
+        with patch('%s.get_installed_distributions' % pbm
                    ) as mock_pgid:
-            with patch('%s.pip.FrozenRequirement.from_dist' % pbm
+            with patch('%s.FrozenRequirement.from_dist' % pbm
                        ) as mock_from_dist:
                 with patch('%s._dist_version_url' % pb) as mock_dist_vu:
                     mock_pgid.return_value = installed_dists

versionfinder/version.py

@@ -35,5 +35,5 @@
 ##################################################################################
 """
 
-VERSION = '0.1.3'
+VERSION = '1.0.0'
 PROJECT_URL = 'https://github.com/jantman/versionfinder'

versionfinder/versionfinder.py

@@ -37,21 +37,44 @@
 ################################################################################
 """
 
+import sys
 import os
 import logging
 import inspect
 from contextlib import contextmanager
+import warnings
 
 from .versioninfo import VersionInfo
 
+# Note: we catch all exceptions here because of
+# https://github.com/jantman/versionfinder/issues/7 - some pip versions
+# throw an import-time AttributeError when running in Lambda, or other
+# environments where sys.stdin is None. Per that issue, the right thing to
+# do is never fail if pip can't be imported.
+# This was fixed in https://github.com/pypa/pip/pull/7118 / pip 19.3
 try:
-    import pip._internal as pip
-except (ImportError, KeyError):
+    from pip._internal.operations.freeze import FrozenRequirement
+except Exception:  # nocoverage
     try:
-        import pip
-    except (ImportError, KeyError):
-        # this is used within try blocks; NBD if they fail
-        pass
+        from pip._internal import FrozenRequirement
+    except Exception:
+        try:
+            from pip import FrozenRequirement
+        except Exception:
+            # this is used within try blocks; NBD if they fail
+            pass
+
+try:
+    from pip._internal.utils.misc import get_installed_distributions
+except Exception:  # nocoverage
+    try:
+        from pip._internal import get_installed_distributions
+    except Exception:
+        try:
+            from pip import get_installed_distributions
+        except Exception:
+            # this is used within try blocks; NBD if they fail
+            pass
 
 try:
     import pkg_resources
@@ -61,12 +84,16 @@
 
 try:
     from git import Repo
-except Exception:
+except Exception:  # nocoverage
     # this is used within try blocks; NBD if they fail
     pass
 
 logger = logging.getLogger(__name__)
 
+warnings.filterwarnings(
+    action="always", category=DeprecationWarning, module=__name__
+)
+
 
 class VersionFinder(object):
 
@@ -120,6 +147,17 @@ def __init__(self, package_name, package_file=None, log=False,
         logger.debug('package_dir: %s' % self.package_dir)
         self._pip_locations = []
         self._pkg_resources_locations = []
+        if (
+            sys.version_info[0] < 3 or
+            sys.version_info[0] == 3 and sys.version_info[1] < 5
+        ):  # nocoverage
+            warnings.warn(
+                'The versionfinder package no longer supports Python %d.%d; '
+                'please switch to Python 3.5 or newer.' % (
+                    sys.version_info[0], sys.version_info[1]
+                ),
+                DeprecationWarning
+            )
 
     def find_package_version(self):
         """
@@ -160,7 +198,10 @@ def find_package_version(self):
             pip_info = self._find_pip_info()
         except Exception:
             # we NEVER want this to crash the program
-            logger.debug('Caught exception running _find_pip_info()')
+            logger.debug(
+                'Caught exception running _find_pip_info()',
+                exc_info=True
+            )
             pip_info = {}
         logger.debug("pip info: %s", pip_info)
         for k, v in pip_info.items():
@@ -234,7 +275,7 @@ def _find_pip_info(self):
         dist = None
         dist_name = self.package_name.replace('_', '-')
         logger.debug('Checking for pip distribution named: %s', dist_name)
-        for d in pip.get_installed_distributions():
+        for d in get_installed_distributions():
             if d.project_name == dist_name:
                 dist = d
         if dist is None:
@@ -246,7 +287,10 @@ def _find_pip_info(self):
         res['version'] = ver
         res['url'] = url
         # this is a bit of an ugly, lazy hack...
-        req = pip.FrozenRequirement.from_dist(dist, [])
+        try:
+            req = FrozenRequirement.from_dist(dist, [])
+        except TypeError:  # nocoverage
+            req = FrozenRequirement.from_dist(dist)
         logger.debug('pip FrozenRequirement: %s', req)
         res['requirement'] = str(req.req)
         return res