DOC: Fix EX03 errors in docstrings to_latex, read_pickle, pipe (pandas-dev#56843)

Author: jordan-d-murphy

ci/code_checks.sh

@@ -73,7 +73,6 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
     $BASE_DIR/scripts/validate_docstrings.py --format=actions --errors=EX03 --ignore_functions \
         pandas.Series.plot.line \
         pandas.Series.to_sql \
-        pandas.Series.to_latex \
         pandas.errors.DatabaseError \
         pandas.errors.IndexingError \
         pandas.errors.InvalidColumnName \
@@ -87,16 +86,13 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         pandas.Timestamp.ceil \
         pandas.Timestamp.floor \
         pandas.Timestamp.round \
-        pandas.read_pickle \
         pandas.ExcelWriter \
         pandas.read_json \
         pandas.io.json.build_table_schema \
-        pandas.DataFrame.to_latex \
         pandas.io.formats.style.Styler.to_latex \
         pandas.read_parquet \
         pandas.DataFrame.to_sql \
         pandas.read_stata \
-        pandas.core.resample.Resampler.pipe \
         pandas.core.resample.Resampler.interpolate \
         pandas.plotting.scatter_matrix \
         pandas.pivot \

pandas/core/generic.py

@@ -3544,7 +3544,7 @@ def to_latex(
         >>> print(df.to_latex(index=False,
         ...                   formatters={"name": str.upper},
         ...                   float_format="{:.1f}".format,
-        ... ))  # doctest: +SKIP
+        ...                   ))  # doctest: +SKIP
         \begin{tabular}{lrr}
         \toprule
         name & age & height \\

pandas/core/groupby/groupby.py

@@ -444,14 +444,15 @@ class providing the base-class of operations.
     a `(callable, data_keyword)` tuple where `data_keyword` is a
     string indicating the keyword of `callable` that expects the
     %(klass)s object.
-args : iterable, optional
+*args : iterable, optional
        Positional arguments passed into `func`.
-kwargs : dict, optional
+**kwargs : dict, optional
          A dictionary of keyword arguments passed into `func`.
 
 Returns
 -------
-the return type of `func`.
+%(klass)s
+    The original object with the function `func` applied.
 
 See Also
 --------

pandas/io/formats/style.py

@@ -770,7 +770,7 @@ def to_latex(
 
         For example the following code will highlight and bold a cell in HTML-CSS:
 
-        >>> df = pd.DataFrame([[1,2], [3,4]])
+        >>> df = pd.DataFrame([[1, 2], [3, 4]])
         >>> s = df.style.highlight_max(axis=None,
         ...                            props='background-color:red; font-weight:bold;')
         >>> s.to_html()  # doctest: +SKIP
@@ -893,9 +893,9 @@ def to_latex(
         >>> s.table_styles = []
         >>> s.caption = None
         >>> s.format({
-        ...    ("Numeric", "Integers"): '\${}',
-        ...    ("Numeric", "Floats"): '{:.3f}',
-        ...    ("Non-Numeric", "Strings"): str.upper
+        ...     ("Numeric", "Integers"): '\\${}',
+        ...     ("Numeric", "Floats"): '{:.3f}',
+        ...     ("Non-Numeric", "Strings"): str.upper
         ... })  # doctest: +SKIP
                         Numeric      Non-Numeric
                   Integers   Floats    Strings

pandas/io/pickle.py

@@ -121,7 +121,7 @@ def read_pickle(
     storage_options: StorageOptions | None = None,
 ) -> DataFrame | Series:
     """
-    Load pickled pandas object (or any object) from file.
+    Load pickled pandas object (or any object) from file and return unpickled object.
 
     .. warning::
 
@@ -143,7 +143,8 @@ def read_pickle(
 
     Returns
     -------
-    same type as object stored in file
+    object
+        The unpickled pandas object (or any object) that was stored in file.
 
     See Also
     --------
@@ -162,7 +163,7 @@ def read_pickle(
     --------
     >>> original_df = pd.DataFrame(
     ...     {{"foo": range(5), "bar": range(5, 10)}}
-    ...    )  # doctest: +SKIP
+    ... )  # doctest: +SKIP
     >>> original_df  # doctest: +SKIP
        foo  bar
     0    0    5