Debug free threading build

pandas/compat/__init__.py

@@ -17,9 +17,11 @@
 
 from pandas.compat._constants import (
     IS64,
+    IS_FREE_THREADING,
     ISMUSL,
     PY311,
     PY312,
+    PY313,
     PYPY,
     WASM,
 )
@@ -153,8 +155,10 @@ def is_ci_environment() -> bool:
     "HAS_PYARROW",
     "IS64",
     "ISMUSL",
+    "IS_FREE_THREADING",
     "PY311",
     "PY312",
+    "PY313",
     "PYPY",
     "WASM",
     "is_numpy_dev",

pandas/compat/_constants.py

@@ -15,16 +15,20 @@
 
 PY311 = sys.version_info >= (3, 11)
 PY312 = sys.version_info >= (3, 12)
+PY313 = sys.version_info >= (3, 13)
 PYPY = platform.python_implementation() == "PyPy"
 WASM = (sys.platform == "emscripten") or (platform.machine() in ["wasm32", "wasm64"])
+IS_FREE_THREADING = False if not PY313 else not sys._is_gil_enabled()  # type: ignore[attr-defined]
 ISMUSL = "musl" in (sysconfig.get_config_var("HOST_GNU_TYPE") or "")
 REF_COUNT = 2 if PY311 else 3
 
 __all__ = [
     "IS64",
     "ISMUSL",
+    "IS_FREE_THREADING",
     "PY311",
     "PY312",
+    "PY313",
     "PYPY",
     "WASM",
 ]

pandas/compat/numpy/__init__.py

@@ -13,6 +13,7 @@
 np_version_gte1p24p3 = _nlv >= Version("1.24.3")
 np_version_gte1p25 = _nlv >= Version("1.25")
 np_version_gt2 = _nlv >= Version("2.0.0")
+np_version_gt2p2 = _nlv >= Version("2.2.0")
 is_numpy_dev = _nlv.dev is not None
 _min_numpy_ver = "1.23.5"
 

pandas/tests/arrays/string_/test_string.py

@@ -10,6 +10,8 @@
 
 from pandas._config import using_string_dtype
 
+from pandas.compat import IS_FREE_THREADING
+from pandas.compat.numpy import np_version_gt2p2
 from pandas.compat.pyarrow import pa_version_under12p0
 
 from pandas.core.dtypes.common import is_dtype_equal
@@ -140,6 +142,10 @@ def test_setitem_with_array_with_missing(dtype):
     tm.assert_numpy_array_equal(value, value_orig)
 
 
+@pytest.mark.skipif(
+    IS_FREE_THREADING and np_version_gt2p2,
+    reason="Segfaults in TimedeltaArray._format_native_types",
+)
 def test_astype_roundtrip(dtype):
     ser = pd.Series(pd.date_range("2000", periods=12))
     ser[0] = None

pandas/tests/copy_view/test_replace.py

@@ -1,6 +1,9 @@
 import numpy as np
 import pytest
 
+from pandas.compat import IS_FREE_THREADING
+from pandas.compat.numpy import np_version_gt2p2
+
 from pandas import (
     Categorical,
     DataFrame,
@@ -45,6 +48,10 @@ def test_replace(replace_kwargs):
     tm.assert_frame_equal(df, df_orig)
 
 
+@pytest.mark.skipif(
+    IS_FREE_THREADING and np_version_gt2p2,
+    reason="Segfaults in array_algos.replace.replace_regex",
+)
 def test_replace_regex_inplace_refs():
     df = DataFrame({"a": ["aaa", "bbb"]})
     df_orig = df.copy()
@@ -56,6 +63,10 @@ def test_replace_regex_inplace_refs():
     tm.assert_frame_equal(view, df_orig)
 
 
+@pytest.mark.skipif(
+    IS_FREE_THREADING and np_version_gt2p2,
+    reason="Segfaults in array_algos.replace.replace_regex",
+)
 def test_replace_regex_inplace():
     df = DataFrame({"a": ["aaa", "bbb"]})
     arr = get_array(df, "a")

pandas/tests/series/methods/test_astype.py

@@ -10,6 +10,8 @@
 import pytest
 
 from pandas._libs.tslibs import iNaT
+from pandas.compat import IS_FREE_THREADING
+from pandas.compat.numpy import np_version_gt2p2
 import pandas.util._test_decorators as td
 
 from pandas import (
@@ -299,6 +301,10 @@ def test_astype_str_cast_dt64(self):
         expected = Series(["2010-01-04 00:00:00-05:00"], dtype="str")
         tm.assert_series_equal(res, expected)
 
+    @pytest.mark.skipif(
+        IS_FREE_THREADING and np_version_gt2p2,
+        reason="Segfaults in TimedeltaArray._format_native_types",
+    )
     def test_astype_str_cast_td64(self):
         # see GH#9757
 
@@ -493,6 +499,10 @@ def test_astype_retain_attrs(self, any_numpy_dtype):
 
 
 class TestAstypeString:
+    @pytest.mark.skipif(
+        IS_FREE_THREADING and np_version_gt2p2,
+        reason="Segfaults in TimedeltaArray._format_native_types",
+    )
     @pytest.mark.parametrize(
         "data, dtype",
         [

pandas/tests/series/methods/test_replace.py

@@ -3,6 +3,9 @@
 import numpy as np
 import pytest
 
+from pandas.compat import IS_FREE_THREADING
+from pandas.compat.numpy import np_version_gt2p2
+
 import pandas as pd
 import pandas._testing as tm
 from pandas.core.arrays import IntervalArray
@@ -510,6 +513,10 @@ def test_replace_extension_other(self, frame_or_series):
         # should not have changed dtype
         tm.assert_equal(obj, result)
 
+    @pytest.mark.skipif(
+        IS_FREE_THREADING and np_version_gt2p2,
+        reason="Segfaults in array_algos.replace.compare_or_regex_search",
+    )
     def test_replace_with_compiled_regex(self):
         # https://github.com/pandas-dev/pandas/issues/35680
         s = pd.Series(["a", "b", "c"])

scripts/validate_unwanted_patterns.py

@@ -89,7 +89,8 @@ def _get_literal_string_prefix_len(token_string: str) -> int:
         return 0
 
 
-PRIVATE_FUNCTIONS_ALLOWED = {"sys._getframe"}  # no known alternative
+  # no known alternative
+PRIVATE_FUNCTIONS_ALLOWED = {"sys._getframe", "sys._is_gil_enabled"}
 
 
 def private_function_across_module(file_obj: IO[str]) -> Iterable[tuple[int, str]]: