DOC: add RT03,SA01 for pandas.api.extensions.ExtensionArray.copy (#58704)

* DOC: add RT03,SA01 for pandas.api.extensions.ExtensionArray.copy

* DOC: remove RT03,SA01 for pandas.api.extensions.ExtensionArray.copy

Author: tuhinsharma121

ci/code_checks.sh

@@ -322,7 +322,6 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         -i "pandas.api.extensions.ExtensionArray._reduce RT03,SA01" \
         -i "pandas.api.extensions.ExtensionArray._values_for_factorize SA01" \
         -i "pandas.api.extensions.ExtensionArray.astype SA01" \
-        -i "pandas.api.extensions.ExtensionArray.copy RT03,SA01" \
         -i "pandas.api.extensions.ExtensionArray.dropna RT03,SA01" \
         -i "pandas.api.extensions.ExtensionArray.dtype SA01" \
         -i "pandas.api.extensions.ExtensionArray.duplicated RT03,SA01" \

pandas/core/arrays/base.py

@@ -1604,9 +1604,19 @@ def copy(self) -> Self:
         """
         Return a copy of the array.
 
+        This method creates a copy of the `ExtensionArray` where modifying the
+        data in the copy will not affect the original array. This is useful when
+        you want to manipulate data without altering the original dataset.
+
         Returns
         -------
         ExtensionArray
+            A new `ExtensionArray` object that is a copy of the current instance.
+
+        See Also
+        --------
+        DataFrame.copy : Return a copy of the DataFrame.
+        Series.copy : Return a copy of the Series.
 
         Examples
         --------