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TST: add timedelta describe #13769

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Jul 24, 2016
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TST: add timedelta describe #13769

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37 changes: 37 additions & 0 deletions pandas/tests/frame/test_analytics.py
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Original file line number Diff line number Diff line change
Expand Up @@ -295,6 +295,43 @@ def test_describe_datetime_columns(self):
self.assertEqual(result.columns.freq, 'MS')
self.assertEqual(result.columns.tz, expected.columns.tz)

def test_describe_timedelta_values(self):
# GH 6145
t1 = pd.timedelta_range('1 days', freq='D', periods=5)
t2 = pd.timedelta_range('1 hours', freq='H', periods=5)
df = pd.DataFrame({'t1': t1, 't2': t2})

expected = DataFrame({'t1': [5, pd.Timedelta('3 days'),
df.iloc[:, 0].std(),
pd.Timedelta('1 days'),
pd.Timedelta('2 days'),
pd.Timedelta('3 days'),
pd.Timedelta('4 days'),
pd.Timedelta('5 days')],
't2': [5, pd.Timedelta('3 hours'),
df.iloc[:, 1].std(),
pd.Timedelta('1 hours'),
pd.Timedelta('2 hours'),
pd.Timedelta('3 hours'),
pd.Timedelta('4 hours'),
pd.Timedelta('5 hours')]},
index=['count', 'mean', 'std', 'min', '25%',
'50%', '75%', 'max'])

res = df.describe()
tm.assert_frame_equal(res, expected)

exp_repr = (" t1 t2\n"
"count 5 5\n"
"mean 3 days 00:00:00 0 days 03:00:00\n"
"std 1 days 13:56:50.394919 0 days 01:34:52.099788\n"
"min 1 days 00:00:00 0 days 01:00:00\n"
"25% 2 days 00:00:00 0 days 02:00:00\n"
"50% 3 days 00:00:00 0 days 03:00:00\n"
"75% 4 days 00:00:00 0 days 04:00:00\n"
"max 5 days 00:00:00 0 days 05:00:00")
self.assertEqual(repr(res), exp_repr)

def test_reduce_mixed_frame(self):
# GH 6806
df = DataFrame({
Expand Down