Merge pull request #6535 from clarkfitzg/error_message

BUG: informative error message with Series ValueError

Author: hayd

doc/source/release.rst

@@ -139,6 +139,7 @@ Improvements to existing features
 Bug Fixes
 ~~~~~~~~~
 
+- Bug in Series ValueError when index doesn't match data (:issue:`6532`)
 - Bug in ``pd.DataFrame.sort_index`` where mergesort wasn't stable when ``ascending=False`` (:issue:`6399`)
 - Bug in ``pd.tseries.frequencies.to_offset`` when argument has leading zeroes (:issue:`6391`)
 - Bug in version string gen. for dev versions with shallow clones / install from tarball (:issue:`6127`)

pandas/core/internals.py

@@ -61,8 +61,8 @@ def __init__(self, values, items, ref_items, ndim=None, fastpath=False,
             raise ValueError('Wrong number of dimensions')
 
         if len(items) != len(values):
-            raise ValueError('Wrong number of items passed %d, indices imply '
-                             '%d' % (len(items), len(values)))
+            raise ValueError('Wrong number of items passed %d, index implies '
+                             '%d' % (len(values), len(items)))
 
         self.set_ref_locs(placement)
         self.values = values