bpo-45167.patch

   1 From 8871c7285fc097fd1bf713aa184cba7e2804f625 Mon Sep 17 00:00:00 2001
   2 From: Bas van Beek <b.f.van.beek@vu.nl>
   3 Date: Wed, 10 Nov 2021 15:36:00 +0100
   4 Subject: [PATCH] MAINT: Do not forward `__(deep)copy__` calls of
   5  `_GenericAlias` to the wrapped type
   6
   7 Adapt to the python 3.9.8 changes made in bpo-45167.
   8 ---
   9  numpy/typing/_generic_alias.py           |  2 ++
  10  numpy/typing/tests/test_generic_alias.py | 16 ++++++++++++++++
  11  2 files changed, 18 insertions(+)
  12
  13 diff --git a/numpy/typing/_generic_alias.py b/numpy/typing/_generic_alias.py
  14 index 932f12dd05d..1eb2c8c05f0 100644
  15 --- a/numpy/typing/_generic_alias.py
  16 +++ b/numpy/typing/_generic_alias.py
  17 @@ -185,6 +185,8 @@ def __eq__(self, value: object) -> bool:
  18          "__mro_entries__",
  19          "__reduce__",
  20          "__reduce_ex__",
  21 +        "__copy__",
  22 +        "__deepcopy__",
  23      })
  24
  25      def __getattribute__(self, name: str) -> Any:
  26 diff --git a/numpy/typing/tests/test_generic_alias.py b/numpy/typing/tests/test_generic_alias.py
  27 index 3021d985934..39343420bdc 100644
  28 --- a/numpy/typing/tests/test_generic_alias.py
  29 +++ b/numpy/typing/tests/test_generic_alias.py
  30 @@ -1,6 +1,7 @@
  31  from __future__ import annotations
  32
  33  import sys
  34 +import copy
  35  import types
  36  import pickle
  37  import weakref
  38 @@ -80,6 +81,21 @@ def test_pass(self, name: str, func: FuncType) -> None:
  39              value_ref = func(NDArray_ref)
  40              assert value == value_ref
  41
  42 +    @pytest.mark.parametrize("name,func", [
  43 +        ("__copy__", lambda n: n == copy.copy(n)),
  44 +        ("__deepcopy__", lambda n: n == copy.deepcopy(n)),
  45 +    ])
  46 +    def test_copy(self, name: str, func: FuncType) -> None:
  47 +        value = func(NDArray)
  48 +
  49 +        # xref bpo-45167
  50 +        GE_398 = (
  51 +            sys.version_info[:2] == (3, 9) and sys.version_info >= (3, 9, 8)
  52 +        )
  53 +        if GE_398 or sys.version_info >= (3, 10, 1):
  54 +            value_ref = func(NDArray_ref)
  55 +            assert value == value_ref
  56 +
  57      def test_weakref(self) -> None:
  58          """Test ``__weakref__``."""
  59          value = weakref.ref(NDArray)()