From 0e7ce964f38c54fe7de169d5acbcfe7e8450d589 Mon Sep 17 00:00:00 2001
From: Marco Gorelli <33491632+MarcoGorelli@users.noreply.github.com>
Date: Thu, 7 Mar 2024 08:36:56 +0000
Subject: [PATCH 1/2] BUG: DataFrame Interchange Protocol errors on Boolean
 columns [skip-ci]

---
 doc/source/whatsnew/v2.2.2.rst        | 1 +
 pandas/core/interchange/utils.py      | 3 +++
 pandas/tests/interchange/test_impl.py | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/doc/source/whatsnew/v2.2.2.rst b/doc/source/whatsnew/v2.2.2.rst
index 54084abab7817..ce15b5d742a9d 100644
--- a/doc/source/whatsnew/v2.2.2.rst
+++ b/doc/source/whatsnew/v2.2.2.rst
@@ -24,6 +24,7 @@ Bug fixes
 ~~~~~~~~~
 - :meth:`DataFrame.__dataframe__` was showing bytemask instead of bitmask for ``'string[pyarrow]'`` validity buffer (:issue:`57762`)
 - :meth:`DataFrame.__dataframe__` was showing non-null validity buffer (instead of ``None``) ``'string[pyarrow]'`` without missing values (:issue:`57761`)
+- :meth:`DataFrame.__dataframe__` was producing incorrect data buffers when the column's type was nullable boolean (:issue:`55332`)
 
 .. ---------------------------------------------------------------------------
 .. _whatsnew_222.other:
diff --git a/pandas/core/interchange/utils.py b/pandas/core/interchange/utils.py
index 2a19dd5046aa3..fd1c7c9639242 100644
--- a/pandas/core/interchange/utils.py
+++ b/pandas/core/interchange/utils.py
@@ -144,6 +144,9 @@ def dtype_to_arrow_c_fmt(dtype: DtypeObj) -> str:
     elif isinstance(dtype, DatetimeTZDtype):
         return ArrowCTypes.TIMESTAMP.format(resolution=dtype.unit[0], tz=dtype.tz)
 
+    elif isinstance(dtype, pd.BooleanDtype):
+        return ArrowCTypes.BOOL
+
     raise NotImplementedError(
         f"Conversion of {dtype} to Arrow C format string is not implemented."
     )
diff --git a/pandas/tests/interchange/test_impl.py b/pandas/tests/interchange/test_impl.py
index 83574e8630d6f..60e05c2c65124 100644
--- a/pandas/tests/interchange/test_impl.py
+++ b/pandas/tests/interchange/test_impl.py
@@ -459,6 +459,7 @@ def test_non_str_names_w_duplicates():
         ),
         ([1.0, 2.25, None], "Float32", "float32"),
         ([1.0, 2.25, None], "Float32[pyarrow]", "float32"),
+        ([True, False, None], "boolean", "bool"),
         ([True, False, None], "boolean[pyarrow]", "bool"),
         (["much ado", "about", None], "string[pyarrow_numpy]", "large_string"),
         (["much ado", "about", None], "string[pyarrow]", "large_string"),
@@ -521,6 +522,7 @@ def test_pandas_nullable_with_missing_values(
         ),
         ([1.0, 2.25, 5.0], "Float32", "float32"),
         ([1.0, 2.25, 5.0], "Float32[pyarrow]", "float32"),
+        ([True, False, False], "boolean", "bool"),
         ([True, False, False], "boolean[pyarrow]", "bool"),
         (["much ado", "about", "nothing"], "string[pyarrow_numpy]", "large_string"),
         (["much ado", "about", "nothing"], "string[pyarrow]", "large_string"),

From 30c4fbafae19e32e13adc3c6c8dbe7c617ce7c49 Mon Sep 17 00:00:00 2001
From: Marco Gorelli <33491632+MarcoGorelli@users.noreply.github.com>
Date: Fri, 22 Mar 2024 18:54:17 +0000
Subject: [PATCH 2/2] whatsnew

---
 doc/source/whatsnew/v2.2.2.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/source/whatsnew/v2.2.2.rst b/doc/source/whatsnew/v2.2.2.rst
index ce15b5d742a9d..2a48403d9a318 100644
--- a/doc/source/whatsnew/v2.2.2.rst
+++ b/doc/source/whatsnew/v2.2.2.rst
@@ -22,9 +22,9 @@ Fixed regressions
 
 Bug fixes
 ~~~~~~~~~
+- :meth:`DataFrame.__dataframe__` was producing incorrect data buffers when the column's type was nullable boolean (:issue:`55332`)
 - :meth:`DataFrame.__dataframe__` was showing bytemask instead of bitmask for ``'string[pyarrow]'`` validity buffer (:issue:`57762`)
 - :meth:`DataFrame.__dataframe__` was showing non-null validity buffer (instead of ``None``) ``'string[pyarrow]'`` without missing values (:issue:`57761`)
-- :meth:`DataFrame.__dataframe__` was producing incorrect data buffers when the column's type was nullable boolean (:issue:`55332`)
 
 .. ---------------------------------------------------------------------------
 .. _whatsnew_222.other: