Merge pull request pandas-dev#9642 from jreback/winfix2

COMPAT: dtype fix for windows tests; ensure passing i8 to tslib/normalize

Author: jreback

pandas/tseries/tests/test_resample.py

@@ -884,7 +884,7 @@ def test_resmaple_dst_anchor(self):
 
         dti = date_range('2013-09-30', '2013-11-02', freq='30Min', tz='Europe/Paris')
         values = range(dti.size)
-        df = DataFrame({"a": values, "b": values, "c": values}, index=dti)
+        df = DataFrame({"a": values, "b": values, "c": values}, index=dti, dtype='int64')
         how = {"a": "min", "b": "max", "c": "count"}
 
         assert_frame_equal(df.resample("W-MON", how=how)[["a", "b", "c"]],

pandas/tslib.pyx

@@ -456,7 +456,7 @@ class Timestamp(_Timestamp):
             tz = maybe_get_tz(tz)
             if not isinstance(ambiguous, basestring):
                 ambiguous   =   [ambiguous]
-            value = tz_localize_to_utc(np.array([self.value]), tz,
+            value = tz_localize_to_utc(np.array([self.value],dtype='i8'), tz,
                                        ambiguous=ambiguous)[0]
             return Timestamp(value, tz=tz)
         else:
@@ -468,6 +468,7 @@ class Timestamp(_Timestamp):
                 raise TypeError('Cannot localize tz-aware Timestamp, use '
                                 'tz_convert for conversions')
 
+
     def tz_convert(self, tz):
         """
         Convert Timestamp to another time zone or localize to requested time
@@ -569,7 +570,7 @@ class Timestamp(_Timestamp):
         Normalize Timestamp to midnight, preserving
         tz information.
         """
-        normalized_value = date_normalize(np.array([self.value]), tz=self.tz)[0]
+        normalized_value = date_normalize(np.array([self.value], dtype='i8'), tz=self.tz)[0]
         return Timestamp(normalized_value).tz_localize(self.tz)
 
     def __radd__(self, other):