Drop Python3.6 in CI, setup.cfg, and readme.

.github/workflows/main.yml

@@ -31,14 +31,12 @@ jobs:
       fail-fast: false
       matrix:
         name: [
-          "windows-py36",
           "windows-py37",
           "windows-py37-pluggy",
           "windows-py38",
           "windows-py39",
           "windows-py310",
 
-          "ubuntu-py36",
           "ubuntu-py37",
           "ubuntu-py37-pluggy",
           "ubuntu-py37-freeze",
@@ -56,10 +54,6 @@ jobs:
         ]
 
         include:
-          - name: "windows-py36"
-            python: "3.6"
-            os: windows-latest
-            tox_env: "py36-xdist"
           - name: "windows-py37"
             python: "3.7"
             os: windows-latest
@@ -82,10 +76,6 @@ jobs:
             os: windows-latest
             tox_env: "py310-xdist"
 
-          - name: "ubuntu-py36"
-            python: "3.6"
-            os: ubuntu-latest
-            tox_env: "py36-xdist"
           - name: "ubuntu-py37"
             python: "3.7"
             os: ubuntu-latest

.pre-commit-config.yaml

@@ -32,12 +32,12 @@ repos:
     rev: v2.6.0
     hooks:
     -   id: reorder-python-imports
-        args: ['--application-directories=.:src', --py36-plus]
+        args: ['--application-directories=.:src', --py37-plus]
 -   repo: https://github.com/asottile/pyupgrade
     rev: v2.29.1
     hooks:
     -   id: pyupgrade
-        args: [--py36-plus]
+        args: [--py37-plus]
 -   repo: https://github.com/asottile/setup-cfg-fmt
     rev: v1.20.0
     hooks:

README.rst

@@ -100,7 +100,7 @@ Features
 - Can run `unittest <https://docs.pytest.org/en/stable/how-to/unittest.html>`_ (or trial),
   `nose <https://docs.pytest.org/en/stable/how-to/nose.html>`_ test suites out of the box
 
-- Python 3.6+ and PyPy3
+- Python 3.7+ or PyPy3
 
 - Rich plugin architecture, with over 850+ `external plugins <https://docs.pytest.org/en/latest/reference/plugin_list.html>`_ and thriving community
 

changelog/9437.breaking.rst

@@ -0,0 +1 @@
+Dropped support for Python 3.6, which reached `end-of-life <https://devguide.python.org/#status-of-python-branches>`__ at 2021-12-23.

doc/en/getting-started.rst

@@ -9,7 +9,7 @@ Get Started
 Install ``pytest``
 ----------------------------------------
 
-``pytest`` requires: Python 3.6, 3.7, 3.8, 3.9, or PyPy3.
+``pytest`` requires: Python 3.7+ or PyPy3.
 
 1. Run the following command in your command line:
 

doc/en/how-to/skipping.rst

@@ -84,14 +84,14 @@ It is also possible to skip the whole module using
 
 If you wish to skip something conditionally then you can use ``skipif`` instead.
 Here is an example of marking a test function to be skipped
-when run on an interpreter earlier than Python3.6:
+when run on an interpreter earlier than Python3.10:
 
 .. code-block:: python
 
     import sys
 
 
-    @pytest.mark.skipif(sys.version_info < (3, 7), reason="requires python3.7 or higher")
+    @pytest.mark.skipif(sys.version_info < (3, 10), reason="requires python3.10 or higher")
     def test_function():
         ...
 

doc/en/index.rst

@@ -17,7 +17,7 @@ The ``pytest`` framework makes it easy to write small, readable tests, and can
 scale to support complex functional testing for applications and libraries.
 
 
-**Pythons**: ``pytest`` requires: Python 3.6, 3.7, 3.8, 3.9, or PyPy3.
+``pytest`` requires: Python 3.7+ or PyPy3.
 
 **PyPI package name**: :pypi:`pytest`
 
@@ -78,7 +78,7 @@ Features
 
 - Can run :ref:`unittest <unittest>` (including trial) and :ref:`nose <noseintegration>` test suites out of the box
 
-- Python 3.6+ and PyPy 3
+- Python 3.7+ or PyPy 3
 
 - Rich plugin architecture, with over 800+ :ref:`external plugins <plugin-list>` and thriving community
 

pyproject.toml

@@ -28,8 +28,6 @@ filterwarnings = [
     "default:the imp module is deprecated in favour of importlib:DeprecationWarning:nose.*",
     # distutils is deprecated in 3.10, scheduled for removal in 3.12
     "ignore:The distutils package is deprecated:DeprecationWarning",
-    # produced by python3.6/site.py itself (3.6.7 on Travis, could not trigger it with 3.6.8)."
-    "ignore:.*U.*mode is deprecated:DeprecationWarning:(?!(pytest|_pytest))",
     # produced by pytest-xdist
     "ignore:.*type argument to addoption.*:DeprecationWarning",
     # produced on execnet (pytest-xdist)

setup.cfg

@@ -17,7 +17,6 @@ classifiers =
     Operating System :: POSIX
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
@@ -51,7 +50,7 @@ install_requires =
     atomicwrites>=1.0;sys_platform=="win32"
     colorama;sys_platform=="win32"
     importlib-metadata>=0.12;python_version<"3.8"
-python_requires = >=3.6
+python_requires = >=3.7
 package_dir =
     =src
 setup_requires =

src/_pytest/assertion/rewrite.py

@@ -293,9 +293,8 @@ def _write_pyc_fp(
     # import. However, there's little reason to deviate.
     fp.write(importlib.util.MAGIC_NUMBER)
     # https://www.python.org/dev/peps/pep-0552/
-    if sys.version_info >= (3, 7):
-        flags = b"\x00\x00\x00\x00"
-        fp.write(flags)
+    flags = b"\x00\x00\x00\x00"
+    fp.write(flags)
     # as of now, bytecode header expects 32-bit numbers for size and mtime (#4903)
     mtime = int(source_stat.st_mtime) & 0xFFFFFFFF
     size = source_stat.st_size & 0xFFFFFFFF
@@ -376,31 +375,29 @@ def _read_pyc(
     except OSError:
         return None
     with fp:
-        # https://www.python.org/dev/peps/pep-0552/
-        has_flags = sys.version_info >= (3, 7)
         try:
             stat_result = os.stat(source)
             mtime = int(stat_result.st_mtime)
             size = stat_result.st_size
-            data = fp.read(16 if has_flags else 12)
+            data = fp.read(16)
         except OSError as e:
             trace(f"_read_pyc({source}): OSError {e}")
             return None
         # Check for invalid or out of date pyc file.
-        if len(data) != (16 if has_flags else 12):
+        if len(data) != (16):
             trace("_read_pyc(%s): invalid pyc (too short)" % source)
             return None
         if data[:4] != importlib.util.MAGIC_NUMBER:
             trace("_read_pyc(%s): invalid pyc (bad magic number)" % source)
             return None
-        if has_flags and data[4:8] != b"\x00\x00\x00\x00":
+        if data[4:8] != b"\x00\x00\x00\x00":
             trace("_read_pyc(%s): invalid pyc (unsupported flags)" % source)
             return None
-        mtime_data = data[8 if has_flags else 4 : 12 if has_flags else 8]
+        mtime_data = data[8:12]
         if int.from_bytes(mtime_data, "little") != mtime & 0xFFFFFFFF:
             trace("_read_pyc(%s): out of date" % source)
             return None
-        size_data = data[12 if has_flags else 8 : 16 if has_flags else 12]
+        size_data = data[12:16]
         if int.from_bytes(size_data, "little") != size & 0xFFFFFFFF:
             trace("_read_pyc(%s): invalid pyc (incorrect size)" % source)
             return None

src/_pytest/compat.py

@@ -4,7 +4,6 @@
 import inspect
 import os
 import sys
-from contextlib import contextmanager
 from inspect import Parameter
 from inspect import signature
 from pathlib import Path
@@ -186,16 +185,6 @@ def getfuncargnames(
     return arg_names
 
 
-if sys.version_info < (3, 7):
-
-    @contextmanager
-    def nullcontext():
-        yield
-
-else:
-    from contextlib import nullcontext as nullcontext  # noqa: F401
-
-
 def get_default_arg_names(function: Callable[..., Any]) -> Tuple[str, ...]:
     # Note: this code intentionally mirrors the code at the beginning of
     # getfuncargnames, to get the arguments which were excluded from its result

src/_pytest/logging.py

@@ -3,8 +3,8 @@
 import logging
 import os
 import re
-import sys
 from contextlib import contextmanager
+from contextlib import nullcontext
 from io import StringIO
 from pathlib import Path
 from typing import AbstractSet
@@ -22,7 +22,6 @@
 from _pytest._io import TerminalWriter
 from _pytest.capture import CaptureManager
 from _pytest.compat import final
-from _pytest.compat import nullcontext
 from _pytest.config import _strtobool
 from _pytest.config import Config
 from _pytest.config import create_terminal_writer
@@ -628,16 +627,7 @@ def set_log_path(self, fname: str) -> None:
 
         # https://github.com/python/mypy/issues/11193
         stream: io.TextIOWrapper = fpath.open(mode="w", encoding="UTF-8")  # type: ignore[assignment]
-        if sys.version_info >= (3, 7):
-            old_stream = self.log_file_handler.setStream(stream)
-        else:
-            old_stream = self.log_file_handler.stream
-            self.log_file_handler.acquire()
-            try:
-                self.log_file_handler.flush()
-                self.log_file_handler.stream = stream
-            finally:
-                self.log_file_handler.release()
+        old_stream = self.log_file_handler.setStream(stream)
         if old_stream:
             old_stream.close()
 

src/_pytest/pytester.py

@@ -128,7 +128,7 @@ def get_open_files(self) -> List[Tuple[str, str]]:
             stdout=subprocess.PIPE,
             stderr=subprocess.DEVNULL,
             check=True,
-            universal_newlines=True,
+            text=True,
         ).stdout
 
         def isopen(line: str) -> bool:

testing/test_debugging.py

@@ -8,14 +8,6 @@
 from _pytest.monkeypatch import MonkeyPatch
 from _pytest.pytester import Pytester
 
-try:
-    # Type ignored for Python <= 3.6.
-    breakpoint  # type: ignore
-except NameError:
-    SUPPORTS_BREAKPOINT_BUILTIN = False
-else:
-    SUPPORTS_BREAKPOINT_BUILTIN = True
-
 
 _ENVIRON_PYTHONBREAKPOINT = os.environ.get("PYTHONBREAKPOINT", "")
 
@@ -911,14 +903,6 @@ def test_foo():
 
 
 class TestDebuggingBreakpoints:
-    def test_supports_breakpoint_module_global(self) -> None:
-        """Test that supports breakpoint global marks on Python 3.7+."""
-        if sys.version_info >= (3, 7):
-            assert SUPPORTS_BREAKPOINT_BUILTIN is True
-
-    @pytest.mark.skipif(
-        not SUPPORTS_BREAKPOINT_BUILTIN, reason="Requires breakpoint() builtin"
-    )
     @pytest.mark.parametrize("arg", ["--pdb", ""])
     def test_sys_breakpointhook_configure_and_unconfigure(
         self, pytester: Pytester, arg: str
@@ -952,9 +936,6 @@ def test_nothing(): pass
         result = pytester.runpytest_subprocess(*args)
         result.stdout.fnmatch_lines(["*1 passed in *"])
 
-    @pytest.mark.skipif(
-        not SUPPORTS_BREAKPOINT_BUILTIN, reason="Requires breakpoint() builtin"
-    )
     def test_pdb_custom_cls(self, pytester: Pytester, custom_debugger_hook) -> None:
         p1 = pytester.makepyfile(
             """
@@ -969,9 +950,6 @@ def test_nothing():
         assert custom_debugger_hook == ["init", "set_trace"]
 
     @pytest.mark.parametrize("arg", ["--pdb", ""])
-    @pytest.mark.skipif(
-        not SUPPORTS_BREAKPOINT_BUILTIN, reason="Requires breakpoint() builtin"
-    )
     def test_environ_custom_class(
         self, pytester: Pytester, custom_debugger_hook, arg: str
     ) -> None:
@@ -1002,9 +980,6 @@ def test_nothing(): pass
         result = pytester.runpytest_subprocess(*args)
         result.stdout.fnmatch_lines(["*1 passed in *"])
 
-    @pytest.mark.skipif(
-        not SUPPORTS_BREAKPOINT_BUILTIN, reason="Requires breakpoint() builtin"
-    )
     @pytest.mark.skipif(
         not _ENVIRON_PYTHONBREAKPOINT == "",
         reason="Requires breakpoint() default value",
@@ -1025,9 +1000,6 @@ def test_1():
         assert "reading from stdin while output" not in rest
         TestPDB.flush(child)
 
-    @pytest.mark.skipif(
-        not SUPPORTS_BREAKPOINT_BUILTIN, reason="Requires breakpoint() builtin"
-    )
     def test_pdb_not_altered(self, pytester: Pytester) -> None:
         p1 = pytester.makepyfile(
             """

testing/test_parseopt.py

@@ -295,7 +295,7 @@ def test_argcomplete(pytester: Pytester, monkeypatch: MonkeyPatch) -> None:
             stdout=subprocess.PIPE,
             stderr=subprocess.DEVNULL,
             check=True,
-            universal_newlines=True,
+            text=True,
         ).stdout
     except (OSError, subprocess.CalledProcessError):
         pytest.skip("bash is not available")

tox.ini

@@ -4,7 +4,6 @@ minversion = 3.20.0
 distshare = {homedir}/.tox/distshare
 envlist =
     linting
-    py36
     py37
     py38
     py39