BUG: Bug in the returned Series.dt.components index was reset to the default index (GH9247)

Author: jreback

doc/source/whatsnew/v0.16.0.txt

@@ -86,7 +86,7 @@ Bug Fixes
 - Fixed issue using `read_csv` on s3 with Python 3.
 - Fixed compatibility issue in ``DatetimeIndex`` affecting architectures where ``numpy.int_`` defaults to ``numpy.int32`` (:issue:`8943`)
 - Bug in Panel indexing with an object-like (:issue:`9140`)
-
+- Bug in the returned ``Series.dt.components`` index was reset to the default index (:issue:`9247`)
 
 
 

pandas/tests/test_series.py

@@ -142,7 +142,7 @@ def compare(s, name):
             tm.assert_series_equal(result, expected)
 
         # timedeltaindex
-        for s in [Series(timedelta_range('1 day',periods=5)),
+        for s in [Series(timedelta_range('1 day',periods=5),index=list('abcde')),
                   Series(timedelta_range('1 day 01:23:45',periods=5,freq='s')),
                   Series(timedelta_range('2 days 01:23:45.012345',periods=5,freq='ms'))]:
             for prop in ok_for_td:

pandas/tseries/common.py

@@ -139,7 +139,7 @@ def to_pytimedelta(self):
 
     @property
     def components(self):
-        return self.values.components
+        return self.values.components.set_index(self.index)
 
 TimedeltaProperties._add_delegate_accessors(delegate=TimedeltaIndex,
                                             accessors=TimedeltaIndex._datetimelike_ops,