DOC: update the pandas.DataFrame.diff docstring

pandas-dev · Mar 10, 2018 · 15bcb7d · 15bcb7d
1 parent 8019d85
commit 15bcb7d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pandas/core/frame.py b/pandas/core/frame.py
@@ -4736,7 +4736,7 @@ def diff(self, periods=1, axis=0):
         axis : {0 or 'index', 1 or 'columns'}, default 0
             Take difference over rows (0) or columns (1).
 
-            .. versionadded:: 0.16.1
+            .. versionadded:: 0.16.1.
 
         Returns
         -------