DOC: Fixing EX01 - Added examples (#54039)

* Examples Styler, from_custom_template, DataFrame.columns

* Edit link

* Fixing links

* Link again

* Trying that link again

---------

Co-authored-by: Marco Edward Gorelli <[email protected]>

Author: DeaMariaLeon

ci/code_checks.sh

@@ -112,8 +112,6 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         pandas.DatetimeIndex.snap \
         pandas.api.indexers.BaseIndexer \
         pandas.api.indexers.VariableOffsetWindowIndexer \
-        pandas.io.formats.style.Styler \
-        pandas.io.formats.style.Styler.from_custom_template \
         pandas.io.formats.style.Styler.set_caption \
         pandas.io.formats.style.Styler.set_sticky \
         pandas.io.formats.style.Styler.set_uuid \
@@ -157,8 +155,6 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         pandas.api.extensions.ExtensionArray.ndim \
         pandas.api.extensions.ExtensionArray.shape \
         pandas.api.extensions.ExtensionArray.tolist \
-        pandas.DataFrame.columns \
-        pandas.DataFrame.ffill \
         pandas.DataFrame.pad \
         pandas.DataFrame.swapaxes \
         pandas.DataFrame.plot \

pandas/core/frame.py

@@ -11849,7 +11849,24 @@ def isin_(x):
         updated with the new labels, and the output shows the modified DataFrame.
         """,
     )
-    columns = properties.AxisProperty(axis=0, doc="The column labels of the DataFrame.")
+    columns = properties.AxisProperty(
+        axis=0,
+        doc=dedent(
+            """
+                The column labels of the DataFrame.
+
+                Examples
+                --------
+                >>> df = pd.DataFrame({'A': [1, 2], 'B': [3, 4]})
+                >>> df
+                     A  B
+                0    1  3
+                1    2  4
+                >>> df.columns
+                Index(['A', 'B'], dtype='object')
+                """
+        ),
+    )
 
     # ----------------------------------------------------------------------
     # Add plotting methods to DataFrame

pandas/io/formats/style.py

@@ -241,6 +241,16 @@ class Styler(StylerRenderer):
     Any, or all, or these classes can be renamed by using the ``css_class_names``
     argument in ``Styler.set_table_classes``, giving a value such as
     *{"row": "MY_ROW_CLASS", "col_trim": "", "row_trim": ""}*.
+
+    Examples
+    --------
+    >>> df = pd.DataFrame([[1.0, 2.0, 3.0], [4, 5, 6]], index=['a', 'b'],
+    ...                   columns=['A', 'B', 'C'])
+    >>> pd.io.formats.style.Styler(df, precision=2,
+    ...                            caption="My table")  # doctest: +SKIP
+
+    Please see:
+    `Table Visualization <../../user_guide/style.ipynb>`_ for more examples.
     """
 
     def __init__(
@@ -3492,6 +3502,19 @@ def from_custom_template(
         MyStyler : subclass of Styler
             Has the correct ``env``,``template_html``, ``template_html_table`` and
             ``template_html_style`` class attributes set.
+
+        Examples
+        --------
+        >>> from pandas.io.formats.style import Styler  # doctest: +SKIP
+        >>> from IPython.display import HTML  # doctest: +SKIP
+        >>> df = pd.DataFrame({"A": [1, 2]})  # doctest: +SKIP
+        >>> path = "path/to/template"  # doctest: +SKIP
+        >>> file = "template.tpl"  # doctest: +SKIP
+        >>> EasyStyler = Styler.from_custom_template(path, file)  # doctest: +SKIP
+        >>> HTML(EasyStyler(df).to_html(table_title="Another Title"))  # doctest: +SKIP
+
+        Please see:
+        `Table Visualization <../../user_guide/style.ipynb>`_ for more examples.
         """
         loader = jinja2.ChoiceLoader([jinja2.FileSystemLoader(searchpath), cls.loader])