BUG: A few more stragglers.

Author: rkern

pandas/core/nanops.py

@@ -582,7 +582,8 @@ def nankurt(values, axis=None, skipna=True):
         if denom == 0:
             return 0
 
-    result = numer / denom - adj
+    with np.errstate(invalid='ignore', divide='ignore'):
+        result = numer / denom - adj
 
     dtype = values.dtype
     if is_float_dtype(dtype):

pandas/tests/indexes/common.py

@@ -709,7 +709,8 @@ def test_numpy_ufuncs(self):
                     # raise TypeError or ValueError (PeriodIndex)
                     # PeriodIndex behavior should be changed in future version
                     with tm.assertRaises(Exception):
-                        func(idx)
+                        with np.errstate(all='ignore'):
+                            func(idx)
                 elif isinstance(idx, (Float64Index, Int64Index)):
                     # coerces to float (e.g. np.sin)
                     with np.errstate(all='ignore'):
@@ -723,7 +724,8 @@ def test_numpy_ufuncs(self):
                         continue
                     else:
                         with tm.assertRaises(Exception):
-                            func(idx)
+                            with np.errstate(all='ignore'):
+                                func(idx)
 
             for func in [np.isfinite, np.isinf, np.isnan, np.signbit]:
                 if isinstance(idx, pd.tseries.base.DatetimeIndexOpsMixin):