import exceptiongroup on <3.11

src/_pytest/python_api.py

@@ -1,6 +1,7 @@
 import math
 import pprint
 import re
+import sys
 from collections.abc import Collection
 from collections.abc import Sized
 from decimal import Decimal
@@ -25,16 +26,16 @@ from typing import TYPE_CHECKING
 from typing import TypeVar
 from typing import Union
 
-if TYPE_CHECKING:
-    from typing_extensions import TypeAlias, TypeGuard
-
-
 import _pytest._code
 from _pytest.compat import STRING_TYPES
 from _pytest.outcomes import fail
 
 if TYPE_CHECKING:
     from numpy import ndarray
+    from typing_extensions import TypeAlias, TypeGuard
+
+if sys.version_info < (3, 11):
+    from exceptiongroup import BaseExceptionGroup
 
 
 def _non_numeric_type_error(value, at: Optional[str]) -> TypeError:

testing/python/expected_exception_group.py

@@ -1,3 +1,4 @@
+import sys
 from typing import TYPE_CHECKING
 
 import pytest
@@ -9,6 +10,9 @@ from _pytest.python_api import Matcher
 if TYPE_CHECKING:
     from typing_extensions import assert_type
 
+if sys.version_info < (3, 11):
+    from exceptiongroup import ExceptionGroup
+
 
 class TestExpectedExceptionGroup:
     def test_expected_exception_group(self) -> None: