Merge pull request #6946 from ribonoous/patch-1

Update indexing.py

Author: jreback

pandas/core/indexing.py

@@ -438,7 +438,7 @@ def can_do_equal_len():
                 else:
 
                     if len(labels) != len(value):
-                        raise ValueError('Must have equal len keys and value'
+                        raise ValueError('Must have equal len keys and value '
                                          'when setting with an iterable')
 
                     for item, v in zip(labels, value):