Drop support for EOL Python 3.5

README.rst

@@ -89,7 +89,7 @@ Features
 - Can run `unittest <https://docs.pytest.org/en/stable/unittest.html>`_ (or trial),
   `nose <https://docs.pytest.org/en/stable/nose.html>`_ test suites out of the box
 
-- Python 3.5+ and PyPy3
+- Python 3.6+ and PyPy3
 
 - Rich plugin architecture, with over 850+ `external plugins <http://plugincompat.herokuapp.com>`_ and thriving community
 

doc/en/getting-started.rst

@@ -1,7 +1,7 @@
 Installation and Getting Started
 ===================================
 
-**Pythons**: Python 3.5, 3.6, 3.7, 3.8, 3.9, PyPy3
+**Pythons**: Python 3.6, 3.7, 3.8, 3.9, PyPy3
 
 **Platforms**: Linux and Windows
 

doc/en/index.rst

@@ -69,7 +69,7 @@ Features
 
 - Can run :ref:`unittest <unittest>` (including trial) and :ref:`nose <noseintegration>` test suites out of the box
 
-- Python 3.5+ and PyPy 3
+- Python 3.6+ and PyPy 3
 
 - Rich plugin architecture, with over 315+ `external plugins <http://plugincompat.herokuapp.com>`_ and thriving community
 

pyproject.toml

@@ -29,7 +29,7 @@ filterwarnings = [
     "ignore:.*U.*mode is deprecated:DeprecationWarning:(?!(pytest|_pytest))",
     # produced by pytest-xdist
     "ignore:.*type argument to addoption.*:DeprecationWarning",
-    # produced by python >=3.5 on execnet (pytest-xdist)
+    # produced on execnet (pytest-xdist)
     "ignore:.*inspect.getargspec.*deprecated, use inspect.signature.*:DeprecationWarning",
     # pytest's own futurewarnings
     "ignore::pytest.PytestExperimentalApiWarning",

src/_pytest/assertion/rewrite.py

@@ -99,7 +99,7 @@ class AssertionRewritingHook(importlib.abc.MetaPathFinder, importlib.abc.Loader)
             spec is None
             # this is a namespace package (without `__init__.py`)
             # there's nothing to rewrite there
-            # python3.5 - python3.6: `namespace`
+            # python3.6: `namespace`
             # python3.7+: `None`
             or spec.origin == "namespace"
             or spec.origin is None
@@ -1005,7 +1005,7 @@ class AssertionRewriter(ast.NodeVisitor):
         return res, outer_expl
 
     def visit_Starred(self, starred: ast.Starred) -> Tuple[ast.Starred, str]:
-        # From Python 3.5, a Starred node can appear in a function call.
+        # A Starred node can appear in a function call.
         res, expl = self.visit(starred.value)
         new_starred = ast.Starred(res, starred.ctx)
         return new_starred, "*" + expl

src/_pytest/capture.py

@@ -497,8 +497,6 @@ class FDCapture(FDCaptureBinary):
 class CaptureResult(Generic[AnyStr]):
     """The result of :method:`CaptureFixture.readouterr`."""
 
-    # Can't use slots in Python<3.5.3 due to https://bugs.python.org/issue31272
-    if sys.version_info >= (3, 5, 3):
     __slots__ = ("out", "err")
 
     def __init__(self, out: AnyStr, err: AnyStr) -> None:

src/_pytest/python_api.py

@@ -443,7 +443,7 @@ def approx(expected, rel=None, abs=None, nan_ok: bool = False) -> ApproxBase:
       both ``a`` and ``b``, this test is symmetric (i.e.  neither ``a`` nor
       ``b`` is a "reference value").  You have to specify an absolute tolerance
       if you want to compare to ``0.0`` because there is no tolerance by
-      default.  Only available in python>=3.5.  `More information...`__
+      default.  `More information...`__
 
       __ https://docs.python.org/3/library/math.html#math.isclose
 

testing/python/raises.py

@@ -162,11 +162,6 @@ class TestRaises:
 
         class T:
             def __call__(self):
-                # Early versions of Python 3.5 have some bug causing the
-                # __call__ frame to still refer to t even after everything
-                # is done. This makes the test pass for them.
-                if sys.version_info < (3, 5, 2):
-                    del self
                 raise ValueError
 
         t = T()

testing/test_reports.py

@@ -1,4 +1,3 @@
-import sys
 from pathlib import Path
 from typing import Sequence
 from typing import Union
@@ -346,32 +345,6 @@ class TestReportSerialization:
         from subprocess to main process creates an artificial exception, which ExceptionInfo
         can't obtain the ReprFileLocation from.
         """
-        # somehow in Python 3.5 on Windows this test fails with:
-        #   File "c:\...\3.5.4\x64\Lib\multiprocessing\connection.py", line 302, in _recv_bytes
-        #     overlapped=True)
-        # OSError: [WinError 6] The handle is invalid
-        #
-        # so in this platform we opted to use a mock traceback which is identical to the
-        # one produced by the multiprocessing module
-        if sys.version_info[:2] <= (3, 5) and sys.platform.startswith("win"):
-            testdir.makepyfile(
-                """
-                # equivalent of multiprocessing.pool.RemoteTraceback
-                class RemoteTraceback(Exception):
-                    def __init__(self, tb):
-                        self.tb = tb
-                    def __str__(self):
-                        return self.tb
-                def test_a():
-                    try:
-                        raise ValueError('value error')
-                    except ValueError as e:
-                        # equivalent to how multiprocessing.pool.rebuild_exc does it
-                        e.__cause__ = RemoteTraceback('runtime error')
-                        raise e
-            """
-            )
-        else:
         testdir.makepyfile(
             """
             from concurrent.futures import ProcessPoolExecutor