DOC: Fix broken formatting on docstring examples with first-line comments

Author: evanpw

pandas/core/generic.py

@@ -2722,15 +2722,16 @@ def interpolate(self, method='linear', axis=0, limit=None, inplace=False,
 
         Examples
         --------
+        .. code-block:: python
 
-        # Filling in NaNs:
-        >>> s = pd.Series([0, 1, np.nan, 3])
-        >>> s.interpolate()
-        0    0
-        1    1
-        2    2
-        3    3
-        dtype: float64
+            # Filling in NaNs:
+            >>> s = pd.Series([0, 1, np.nan, 3])
+            >>> s.interpolate()
+            0    0
+            1    1
+            2    2
+            3    3
+            dtype: float64
 
         """
         if self.ndim > 2:
@@ -2902,14 +2903,16 @@ def groupby(self, by=None, axis=0, level=None, as_index=True, sort=True,
 
         Examples
         --------
-        # DataFrame result
-        >>> data.groupby(func, axis=0).mean()
+        .. code-block:: python
 
-        # DataFrame result
-        >>> data.groupby(['col1', 'col2'])['col3'].mean()
+            # DataFrame result
+            >>> data.groupby(func, axis=0).mean()
 
-        # DataFrame with hierarchical index
-        >>> data.groupby(['col1', 'col2']).mean()
+            # DataFrame result
+            >>> data.groupby(['col1', 'col2'])['col3'].mean()
+
+            # DataFrame with hierarchical index
+            >>> data.groupby(['col1', 'col2']).mean()
 
         Returns
         -------