From 82b87908cb26f71286c8deb367570b055b4c9b05 Mon Sep 17 00:00:00 2001
From: terrytangyuan <terrytangyuan@gmail.com>
Date: Tue, 1 Sep 2015 08:45:06 -0400
Subject: [PATCH] BUG: Fixed bug that Timedelta raises error when slicing from
 0s

---
 doc/source/whatsnew/v0.17.0.txt         | 1 +
 pandas/tseries/tests/test_timedeltas.py | 8 ++++++++
 pandas/tslib.pyx                        | 3 +--
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/doc/source/whatsnew/v0.17.0.txt b/doc/source/whatsnew/v0.17.0.txt
index eae33bc80be32..fc5777ddea3f1 100644
--- a/doc/source/whatsnew/v0.17.0.txt
+++ b/doc/source/whatsnew/v0.17.0.txt
@@ -821,6 +821,7 @@ Bug Fixes
 - Bug in ``pd.DataFrame`` when constructing an empty DataFrame with a string dtype (:issue:`9428`)
 - Bug in ``pd.DataFrame.diff`` when DataFrame is not consolidated (:issue:`10907`)
 - Bug in ``pd.unique`` for arrays with the ``datetime64`` or ``timedelta64`` dtype that meant an array with object dtype was returned instead the original dtype (:issue:`9431`)
+- Bug in ``Timedelta`` raising error when slicing from 0s (:issue:`10583`)
 - Bug in ``DatetimeIndex.take`` and ``TimedeltaIndex.take`` may not raise ``IndexError`` against invalid index (:issue:`10295`)
 - Bug in ``Series([np.nan]).astype('M8[ms]')``, which now returns ``Series([pd.NaT])`` (:issue:`10747`)
 - Bug in ``PeriodIndex.order`` reset freq (:issue:`10295`)
diff --git a/pandas/tseries/tests/test_timedeltas.py b/pandas/tseries/tests/test_timedeltas.py
index 4870fbd55f33e..97e7f883542cc 100644
--- a/pandas/tseries/tests/test_timedeltas.py
+++ b/pandas/tseries/tests/test_timedeltas.py
@@ -404,6 +404,14 @@ def test_timedelta_range(self):
         result = timedelta_range('0 days',freq='30T',periods=50)
         tm.assert_index_equal(result, expected)
 
+        # issue10583
+        df = pd.DataFrame(np.random.normal(size=(10,4)))
+        df.index = pd.timedelta_range(start='0s', periods=10, freq='s')
+        expected = df.loc[pd.Timedelta('0s'):,:]
+        result = df.loc['0s':,:]
+        assert_frame_equal(expected, result)
+
+
     def test_numeric_conversions(self):
         self.assertEqual(ct(0), np.timedelta64(0,'ns'))
         self.assertEqual(ct(10), np.timedelta64(10,'ns'))
diff --git a/pandas/tslib.pyx b/pandas/tslib.pyx
index 369993b4c54d1..77ac362181a2b 100644
--- a/pandas/tslib.pyx
+++ b/pandas/tslib.pyx
@@ -2265,9 +2265,8 @@ class Timedelta(_Timedelta):
            return "m"
         elif self._h:
            return "h"
-        elif self._d:
+        else:
            return "D"
-        raise ValueError("invalid resolution")
 
     def round(self, reso):
         """