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From ad0ef9233f4e6366faf9512d512ec5248ade6d5e Mon Sep 17 00:00:00 2001
From: Lysandros Nikolaou <lisandrosnik@gmail.com>
Date: Tue, 25 Jun 2024 03:40:22 +0200
Subject: [PATCH] ENH: Fix Python 3.13 test failures & enable CI (#59065)

* ENH: Fix Python 3.13 test failures & enable CI

x-ref #58734

Co-authored-by: Thomas Li <47963215+lithomas1@users.noreply.github.com>

* Cast npy_intp to int to fix Windows CI

---------

Co-authored-by: Thomas Li <47963215+lithomas1@users.noreply.github.com>
---
 .github/workflows/unit-tests.yml                   |  4 ++--
 pandas/_libs/src/vendored/ujson/python/objToJSON.c | 12 ++++++------
 pandas/_libs/tslibs/offsets.pyx                    |  7 ++++++-
 pandas/tests/groupby/test_groupby.py               |  4 +++-
 pandas/tests/io/parser/test_dialect.py             |  2 +-
 pandas/tests/io/test_common.py                     |  5 ++++-
 pandas/tests/io/xml/test_xml.py                    |  2 +-
 pandas/tests/scalar/timedelta/test_arithmetic.py   |  1 +
 8 files changed, 24 insertions(+), 13 deletions(-)

diff --git a/pandas/_libs/tslibs/offsets.pyx b/pandas/_libs/tslibs/offsets.pyx
index c37a4b285d..5dacd7dd55 100644
--- a/pandas/_libs/tslibs/offsets.pyx
+++ b/pandas/_libs/tslibs/offsets.pyx
@@ -4960,7 +4960,12 @@ cpdef to_offset(freq, bint is_period=False):
     if result is None:
         raise ValueError(INVALID_FREQ_ERR_MSG.format(freq))
 
-    if is_period and not hasattr(result, "_period_dtype_code"):
+    try:
+        has_period_dtype_code = hasattr(result, "_period_dtype_code")
+    except ValueError:
+        has_period_dtype_code = False
+
+    if is_period and not has_period_dtype_code:
         if isinstance(freq, str):
             raise ValueError(f"{result.name} is not supported as period frequency")
         else:
diff --git a/pandas/tests/groupby/test_groupby.py b/pandas/tests/groupby/test_groupby.py
index ed9acdd0c9..44d6340e55 100644
--- a/pandas/tests/groupby/test_groupby.py
+++ b/pandas/tests/groupby/test_groupby.py
@@ -2816,7 +2816,9 @@ def test_rolling_wrong_param_min_period():
     test_df = DataFrame([name_l, val_l]).T
     test_df.columns = ["name", "val"]
 
-    result_error_msg = r"__init__\(\) got an unexpected keyword argument 'min_period'"
+    result_error_msg = (
+        r"^[a-zA-Z._]*\(\) got an unexpected keyword argument 'min_period'"
+    )
     with pytest.raises(TypeError, match=result_error_msg):
         test_df.groupby("name")["val"].rolling(window=2, min_period=1).sum()
 
diff --git a/pandas/tests/io/parser/test_dialect.py b/pandas/tests/io/parser/test_dialect.py
index 7a72e66996..803114723b 100644
--- a/pandas/tests/io/parser/test_dialect.py
+++ b/pandas/tests/io/parser/test_dialect.py
@@ -26,7 +26,7 @@ def custom_dialect():
         "escapechar": "~",
         "delimiter": ":",
         "skipinitialspace": False,
-        "quotechar": "~",
+        "quotechar": "`",
         "quoting": 3,
     }
     return dialect_name, dialect_kwargs
diff --git a/pandas/tests/io/test_common.py b/pandas/tests/io/test_common.py
index 0740338686..e51f865630 100644
--- a/pandas/tests/io/test_common.py
+++ b/pandas/tests/io/test_common.py
@@ -485,7 +485,10 @@ class TestMMapWrapper:
                 df.to_csv(path, compression=compression_, encoding=encoding)
 
             # reading should fail (otherwise we wouldn't need the warning)
-            msg = r"UTF-\d+ stream does not start with BOM"
+            msg = (
+                r"UTF-\d+ stream does not start with BOM|"
+                r"'utf-\d+' codec can't decode byte"
+            )
             with pytest.raises(UnicodeError, match=msg):
                 pd.read_csv(path, compression=compression_, encoding=encoding)
 
diff --git a/pandas/tests/io/xml/test_xml.py b/pandas/tests/io/xml/test_xml.py
index 6f429c1ecb..900734e9f0 100644
--- a/pandas/tests/io/xml/test_xml.py
+++ b/pandas/tests/io/xml/test_xml.py
@@ -1044,7 +1044,7 @@ def test_utf16_encoding(xml_baby_names, parser):
         UnicodeError,
         match=(
             "UTF-16 stream does not start with BOM|"
-            "'utf-16-le' codec can't decode byte"
+            "'utf-16(-le)?' codec can't decode byte"
         ),
     ):
         read_xml(xml_baby_names, encoding="UTF-16", parser=parser)
diff --git a/pandas/tests/scalar/timedelta/test_arithmetic.py b/pandas/tests/scalar/timedelta/test_arithmetic.py
index d2fa0f722c..33ac121076 100644
--- a/pandas/tests/scalar/timedelta/test_arithmetic.py
+++ b/pandas/tests/scalar/timedelta/test_arithmetic.py
@@ -622,6 +622,7 @@ class TestTimedeltaMultiplicationDivision:
             [
                 r"Invalid dtype datetime64\[D\] for __floordiv__",
                 "'dtype' is an invalid keyword argument for this function",
+                "this function got an unexpected keyword argument 'dtype'",
                 r"ufunc '?floor_divide'? cannot use operands with types",
             ]
         )
-- 
2.45.2