Merge branch 'pandas-dev:main' into enhence_Styler_bar_test

Author: ccccjone

.circleci/setup_env.sh

@@ -55,6 +55,6 @@ if pip show pandas 1>/dev/null; then
 fi
 
 echo "Install pandas"
-python -m pip install --no-build-isolation -ve .
+python -m pip install --no-build-isolation -ve . --config-settings=setup-args="--werror"
 
 echo "done"

.github/actions/build_pandas/action.yml

@@ -25,8 +25,10 @@ runs:
     - name: Build Pandas
       run: |
         if [[ ${{ inputs.editable }} == "true" ]]; then
-          pip install -e . --no-build-isolation -v --no-deps
+          pip install -e . --no-build-isolation -v --no-deps \
+            --config-settings=setup-args="--werror"
         else
-          pip install . --no-build-isolation -v --no-deps
+          pip install . --no-build-isolation -v --no-deps \
+            --config-settings=setup-args="--werror"
         fi
       shell: bash -el {0}

.github/workflows/unit-tests.yml

@@ -254,7 +254,7 @@ jobs:
           python -m pip install --no-cache-dir -U pip wheel setuptools meson[ninja]==1.2.1 meson-python==0.13.1
           python -m pip install numpy --config-settings=setup-args="-Dallow-noblas=true"
           python -m pip install --no-cache-dir versioneer[toml] cython python-dateutil pytz pytest>=7.3.2 pytest-xdist>=2.2.0 hypothesis>=6.46.1
-          python -m pip install --no-cache-dir --no-build-isolation -e .
+          python -m pip install --no-cache-dir --no-build-isolation -e . --config-settings=setup-args="--werror"
           python -m pip list --no-cache-dir
           export PANDAS_CI=1
           python -m pytest -m 'not slow and not network and not clipboard and not single_cpu' pandas --junitxml=test-data.xml
@@ -292,7 +292,7 @@ jobs:
           . ~/virtualenvs/pandas-dev/bin/activate
           python -m pip install --no-cache-dir -U pip wheel setuptools meson-python==0.13.1 meson[ninja]==1.2.1
           python -m pip install --no-cache-dir versioneer[toml] cython numpy python-dateutil pytz pytest>=7.3.2 pytest-xdist>=2.2.0 hypothesis>=6.46.1
-          python -m pip install --no-cache-dir --no-build-isolation -e .
+          python -m pip install --no-cache-dir --no-build-isolation -e . --config-settings=setup-args="--werror"
           python -m pip list --no-cache-dir
 
       - name: Run Tests
@@ -365,7 +365,7 @@ jobs:
           python -m pip install --pre --extra-index-url https://pypi.anaconda.org/scientific-python-nightly-wheels/simple numpy
           python -m pip install versioneer[toml]
           python -m pip install python-dateutil pytz tzdata cython hypothesis>=6.46.1 pytest>=7.3.2 pytest-xdist>=2.2.0 pytest-cov
-          python -m pip install -ve . --no-build-isolation --no-index --no-deps
+          python -m pip install -ve . --no-build-isolation --no-index --no-deps --config-settings=setup-args="--werror"
           python -m pip list
 
       - name: Run Tests

doc/source/user_guide/io.rst

@@ -1490,9 +1490,9 @@ rows will skip the intervening rows.
 
 .. ipython:: python
 
-   from pandas._testing import makeCustomDataframe as mkdf
-
-   df = mkdf(5, 3, r_idx_nlevels=2, c_idx_nlevels=4)
+   mi_idx = pd.MultiIndex.from_arrays([[1, 2, 3, 4], list("abcd")], names=list("ab"))
+   mi_col = pd.MultiIndex.from_arrays([[1, 2], list("ab")], names=list("cd"))
+   df = pd.DataFrame(np.ones((4, 2)), index=mi_idx, columns=mi_col)
    df.to_csv("mi.csv")
    print(open("mi.csv").read())
    pd.read_csv("mi.csv", header=[0, 1, 2, 3], index_col=[0, 1])

doc/source/whatsnew/v0.12.0.rst

@@ -250,9 +250,9 @@ IO enhancements
 
       .. ipython:: python
 
-         from pandas._testing import makeCustomDataframe as mkdf
-
-         df = mkdf(5, 3, r_idx_nlevels=2, c_idx_nlevels=4)
+         mi_idx = pd.MultiIndex.from_arrays([[1, 2, 3, 4], list("abcd")], names=list("ab"))
+         mi_col = pd.MultiIndex.from_arrays([[1, 2], list("ab")], names=list("cd"))
+         df = pd.DataFrame(np.ones((4, 2)), index=mi_idx, columns=mi_col)
          df.to_csv("mi.csv")
          print(open("mi.csv").read())
          pd.read_csv("mi.csv", header=[0, 1, 2, 3], index_col=[0, 1])

doc/source/whatsnew/v2.1.4.rst

@@ -13,7 +13,7 @@ including other versions of pandas.
 
 Fixed regressions
 ~~~~~~~~~~~~~~~~~
--
+- Fixed regression when trying to read a pickled pandas :class:`DataFrame` from pandas 1.3 (:issue:`55137`)
 -
 
 .. ---------------------------------------------------------------------------
@@ -22,13 +22,15 @@ Fixed regressions
 Bug fixes
 ~~~~~~~~~
 - Bug in :class:`Series` constructor raising DeprecationWarning when ``index`` is a list of :class:`Series` (:issue:`55228`)
+- Bug in :class:`Series` when trying to cast date-like string inputs to :class:`ArrowDtype` of ``pyarrow.timestamp`` (:issue:`56266`)
 - Bug in :meth:`Index.__getitem__` returning wrong result for Arrow dtypes and negative stepsize (:issue:`55832`)
 - Fixed bug in :func:`to_numeric` converting to extension dtype for ``string[pyarrow_numpy]`` dtype (:issue:`56179`)
-- Fixed bug in :meth:`.DataFrameGroupBy.min()` and :meth:`.DataFrameGroupBy.max()` not preserving extension dtype for empty object (:issue:`55619`)
+- Fixed bug in :meth:`.DataFrameGroupBy.min` and :meth:`.DataFrameGroupBy.max` not preserving extension dtype for empty object (:issue:`55619`)
 - Fixed bug in :meth:`DataFrame.__setitem__` casting :class:`Index` with object-dtype to PyArrow backed strings when ``infer_string`` option is set (:issue:`55638`)
 - Fixed bug in :meth:`DataFrame.to_hdf` raising when columns have ``StringDtype`` (:issue:`55088`)
 - Fixed bug in :meth:`Index.insert` casting object-dtype to PyArrow backed strings when ``infer_string`` option is set (:issue:`55638`)
 - Fixed bug in :meth:`Series.mode` not keeping object dtype when ``infer_string`` is set (:issue:`56183`)
+- Fixed bug in :meth:`Series.str.split` and :meth:`Series.str.rsplit` when ``pat=None`` for :class:`ArrowDtype` with ``pyarrow.string`` (:issue:`56271`)
 - Fixed bug in :meth:`Series.str.translate` losing object dtype when string option is set (:issue:`56152`)
 
 .. ---------------------------------------------------------------------------