Drop Python 2.7 and 3.4 support

* Update setup.py requires and classifiers
* Drop Python 2.7 and 3.4 from CI
* Update docs dropping 2.7 and 3.4 support
* Fix mock imports and remove tests related to pypi's mock module
* Add py27 and 34 support docs to the sidebar
* Remove usage of six from tmpdir
* Remove six.PY* code blocks
* Remove sys.version_info related code
* Cleanup compat
* Remove obsolete safe_str
* Remove obsolete __unicode__ methods
* Remove compat.PY35 and compat.PY36: not really needed anymore
* Remove unused UNICODE_TYPES
* Remove Jython specific code
* Remove some Python 2 references from docs

Related to #5275

Author: nicoddemus

.travis.yml

@@ -19,39 +19,28 @@ install:
 jobs:
   include:
     # OSX tests - first (in test stage), since they are the slower ones.
-    - &test-macos
-      os: osx
+    - os: osx
+      # NOTE: (tests with) pexpect appear to be buggy on Travis,
+      #       at least with coverage.
+      #       Log: https://travis-ci.org/pytest-dev/pytest/jobs/500358864
       osx_image: xcode10.1
       language: generic
-      # Coverage for:
-      # - py2 with symlink in test_cmdline_python_package_symlink.
-      env: TOXENV=py27-xdist PYTEST_COVERAGE=1
-      before_install:
-        - python -V
-        - test $(python -c 'import sys; print("%d%d" % sys.version_info[0:2])') = 27
-    - <<: *test-macos
-      env: TOXENV=py37-pexpect,py37-xdist PYTEST_COVERAGE=1
+      env: TOXENV=py37-xdist PYTEST_COVERAGE=1
       before_install:
         - which python3
         - python3 -V
         - ln -sfn "$(which python3)" /usr/local/bin/python
         - python -V
         - test $(python -c 'import sys; print("%d%d" % sys.version_info[0:2])') = 37
 
-    # Full run of latest (major) supported versions, without xdist.
-    - env: TOXENV=py27
-      python: '2.7'
+    # Full run of latest supported version, without xdist.
     - env: TOXENV=py37
       python: '3.7'
 
     # Coverage tracking is slow with pypy, skip it.
-    - env: TOXENV=pypy-xdist
-      python: 'pypy'
     - env: TOXENV=pypy3-xdist
       python: 'pypy3'
 
-    - env: TOXENV=py34-xdist
-      python: '3.4'
     - env: TOXENV=py35-xdist
       python: '3.5'
 
@@ -62,12 +51,6 @@ jobs:
     # Empty PYTEST_ADDOPTS to run this non-verbose.
     - env: TOXENV=py37-lsof-numpy-xdist PYTEST_COVERAGE=1 PYTEST_ADDOPTS=
 
-    # Specialized factors for py27.
-    - env: TOXENV=py27-nobyte-numpy-xdist
-      python: '2.7'
-    - env: TOXENV=py27-pluggymaster-xdist
-      python: '2.7'
-
     # Specialized factors for py37.
     # Coverage for:
     # - test_sys_breakpoint_interception (via pexpect).
@@ -81,12 +64,7 @@ jobs:
       if: type = cron
 
     - stage: baseline
-    # Coverage for:
-    # - _pytest.unittest._handle_skip (via pexpect).
-      env: TOXENV=py27-pexpect,py27-twisted PYTEST_COVERAGE=1
-      python: '2.7'
-    # Use py36 here for faster baseline.
-    - env: TOXENV=py36-xdist
+      env: TOXENV=py36-xdist
       python: '3.6'
     - env: TOXENV=linting,docs,doctesting PYTEST_COVERAGE=1
       cache:

README.rst

@@ -85,7 +85,7 @@ Features
 - Can run `unittest <https://docs.pytest.org/en/latest/unittest.html>`_ (or trial),
   `nose <https://docs.pytest.org/en/latest/nose.html>`_ test suites out of the box;
 
-- Python 2.7, Python 3.4+, PyPy 2.3, Jython 2.5 (untested);
+- Python 3.5+ and PyPy3;
 
 - Rich plugin architecture, with over 315+ `external plugins <http://plugincompat.herokuapp.com>`_ and thriving community;
 

azure-pipelines.yml

@@ -4,7 +4,6 @@ trigger:
 
 variables:
   PYTEST_ADDOPTS: "--junitxml=build/test-results/$(tox.env).xml -vv"
-  python.needs_vc: False
   COVERAGE_FILE: "$(Build.Repository.LocalPath)/.coverage"
   COVERAGE_PROCESS_START: "$(Build.Repository.LocalPath)/.coveragerc"
   PYTEST_COVERAGE: '0'
@@ -16,44 +15,10 @@ jobs:
     vmImage: "vs2017-win2016"
   strategy:
     matrix:
-      py27:
-        python.version: '2.7'
-        tox.env: 'py27'
-      py27-nobyte-lsof-numpy:
-        python.version: '2.7'
-        tox.env: 'py27-lsof-nobyte-numpy'
-        # Coverage for:
-        # - test_supports_breakpoint_module_global
-        # - test_terminal_reporter_writer_attr (without xdist)
-        # - "if write" branch in _pytest.assertion.rewrite
-        # - numpy
-        # - pytester's LsofFdLeakChecker (being skipped)
-        PYTEST_COVERAGE: '1'
-      py27-twisted:
-        python.version: '2.7'
-        tox.env: 'py27-twisted'
-        python.needs_vc: True
-      py27-pluggymaster-xdist:
-        python.version: '2.7'
-        tox.env: 'py27-pluggymaster-xdist'
-        # Coverage for:
-        # - except-IOError in _attempt_to_close_capture_file for py2.
-        #   Also seen with py27-nobyte (using xdist), and py27-xdist.
-        #   But no exception with py27-pexpect,py27-twisted,py27-numpy.
-        PYTEST_COVERAGE: '1'
-      # -- pypy2 and pypy3 are disabled for now: #5279 --
-      # pypy:
-      #   python.version: 'pypy2'
-      #   tox.env: 'pypy'
+      # -- pypy3 disabled for now: #5279 --
       # pypy3:
       #   python.version: 'pypy3'
       #   tox.env: 'pypy3'
-      py34-xdist:
-        python.version: '3.4'
-        tox.env: 'py34-xdist'
-        # Coverage for:
-        # - _pytest.compat._bytes_to_ascii
-        PYTEST_COVERAGE: '1'
       py35-xdist:
         python.version: '3.5'
         tox.env: 'py35-xdist'
@@ -87,10 +52,6 @@ jobs:
       versionSpec: '$(python.version)'
       architecture: 'x64'
 
-  - script: choco install vcpython27
-    condition: eq(variables['python.needs_vc'], True)
-    displayName: 'Install VC for py27'
-
   - script: python -m pip install --upgrade pip && python -m pip install tox
     displayName: 'Install tox'
 

doc/en/_templates/globaltoc.html

@@ -10,6 +10,7 @@ <h3><a href="{{ pathto(master_doc) }}">{{ _('Table Of Contents') }}</a></h3>
   <li><a href="{{ pathto('changelog') }}">Changelog</a></li>
   <li><a href="{{ pathto('contributing') }}">Contributing</a></li>
   <li><a href="{{ pathto('backwards-compatibility') }}">Backwards Compatibility</a></li>
+  <li><a href="{{ pathto('py27-py34-deprecation') }}">Python 2.7 and 3.4 Support</a></li>
   <li><a href="{{ pathto('license') }}">License</a></li>
   <li><a href="{{ pathto('contact') }}">Contact Channels</a></li>
 </ul>

doc/en/example/markers.rst

@@ -288,8 +288,7 @@ its test methods:
 This is equivalent to directly applying the decorator to the
 two test functions.
 
-To remain backward-compatible with Python 2.4 you can also set a
-``pytestmark`` attribute on a TestClass like this:
+Due to legacy reasons, it is possible to set the ``pytestmark`` attribute on a TestClass like this:
 
 .. code-block:: python
 

doc/en/getting-started.rst

@@ -1,9 +1,9 @@
 Installation and Getting Started
 ===================================
 
-**Pythons**: Python 2.7, 3.4, 3.5, 3.6, 3.7, Jython, PyPy-2.3
+**Pythons**: Python 3.5, 3.6, 3.7, PyPy3
 
-**Platforms**: Unix/Posix and Windows
+**Platforms**: Linux and Windows
 
 **PyPI package name**: `pytest <https://pypi.org/project/pytest/>`_
 

doc/en/goodpractices.rst

@@ -7,8 +7,7 @@ Good Integration Practices
 Install package with pip
 -------------------------------------------------
 
-For development, we recommend you use venv_ for virtual environments
-(or virtualenv_ for Python 2.7) and
+For development, we recommend you use venv_ for virtual environments and
 pip_ for installing your application and any dependencies,
 as well as the ``pytest`` package itself.
 This ensures your code and dependencies are isolated from your system Python installation.

doc/en/index.rst

@@ -61,7 +61,7 @@ Features
 
 - Can run :ref:`unittest <unittest>` (including trial) and :ref:`nose <noseintegration>` test suites out of the box;
 
-- Python 2.7, Python 3.4+, PyPy 2.3, Jython 2.5 (untested);
+- Python Python 3.5+ and PyPy 3;
 
 - Rich plugin architecture, with over 315+ `external plugins <http://plugincompat.herokuapp.com>`_ and thriving community;
 

setup.cfg

@@ -23,13 +23,11 @@ classifiers =
     Topic :: Software Development :: Testing
     Topic :: Software Development :: Libraries
     Topic :: Utilities
-    Programming Language :: Python :: 2
-    Programming Language :: Python :: 2.7
-    Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.4
+    Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3.5
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
 platforms = unix, linux, osx, cygwin, win32
 
 [options]
@@ -43,7 +41,7 @@ packages =
     _pytest.mark
 
 py_modules = pytest
-python_requires = >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
+python_requires = >=3.5
 
 
 [options.entry_points]

setup.py

@@ -8,10 +8,8 @@
     "six>=1.10.0",
     "packaging",
     "attrs>=17.4.0",
-    'more-itertools>=4.0.0,<6.0.0;python_version<="2.7"',
-    'more-itertools>=4.0.0;python_version>"2.7"',
+    "more-itertools>=4.0.0",
     "atomicwrites>=1.0",
-    'funcsigs>=1.0;python_version<"3.0"',
     'pathlib2>=2.2.0;python_version<"3.6"',
     'colorama;sys_platform=="win32"',
     "pluggy>=0.12,<1.0",
@@ -30,9 +28,9 @@ def main():
             "testing": [
                 "argcomplete",
                 "hypothesis>=3.56",
+                "mock",
                 "nose",
                 "requests",
-                "mock;python_version=='2.7'",
             ],
         },
         # fmt: on