DOC: Adding example and See also to head and tail method (#16416)

Author: Cheukting

pandas/core/generic.py

@@ -3563,6 +3563,40 @@ def head(self, n=5):
         -------
         obj_head : type of caller
             The first n rows of the caller object.
+
+        See Also
+        --------
+        pandas.DataFrame.tail
+
+        Examples
+        --------
+        >>> df = pd.DataFrame({'animal':['bear', 'bee', 'falcon',
+        ...                   'lion', 'monkey', 'parrot', 'shark']})
+        >>> df
+           animal
+        0    bear
+        1     bee
+        2  falcon
+        3    lion
+        4  monkey
+        5  parrot
+        6   shark
+
+        Viewing the first 5 lines (the default)
+        >>> df.head()
+           animal
+        0    bear
+        1     bee
+        2  falcon
+        3    lion
+        4  monkey
+
+        Viewing the first n lines (three in this case)
+        >>> df.head(3)
+           animal
+        0    bear
+        1     bee
+        2  falcon
         """
 
         return self.iloc[:n]
@@ -3580,6 +3614,41 @@ def tail(self, n=5):
         -------
         obj_tail : type of caller
             The last n rows of the caller object.
+
+        See Also
+        --------
+        pandas.DataFrame.head
+
+        Examples
+        --------
+        >>> df = pd.DataFrame({'animal':['falcon', 'parrot', 'lion',
+        ...                   'monkey', 'shark', 'bee', 'bear']})
+        >>> df
+           animal
+        0    bear
+        1     bee
+        2  falcon
+        3    lion
+        4  monkey
+        5  parrot
+        6   shark
+
+        Viewing the last 5 lines (the default)
+        >>> df.tail()
+           animal
+        2  falcon
+        3    lion
+        4  monkey
+        5  parrot
+        6   shark
+
+        Viewing the last n lines (three in this case)
+        >>> df.tail(3)
+           animal
+        4  monkey
+        5  parrot
+        6   shark
+
         """
 
         if n == 0: