571 lines
19 KiB
Python
571 lines
19 KiB
Python
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from datetime import datetime
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import numpy as np
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import pytest
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import pandas.util._test_decorators as td
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import pandas as pd
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from pandas import (
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DataFrame,
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DatetimeIndex,
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Index,
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Int64Index,
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Series,
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bdate_range,
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date_range,
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)
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import pandas._testing as tm
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from pandas.tseries.offsets import BMonthEnd, Minute, MonthEnd
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START, END = datetime(2009, 1, 1), datetime(2010, 1, 1)
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class TestDatetimeIndexSetOps:
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tz = [
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None,
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"UTC",
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"Asia/Tokyo",
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"US/Eastern",
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"dateutil/Asia/Singapore",
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"dateutil/US/Pacific",
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]
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# TODO: moved from test_datetimelike; dedup with version below
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def test_union2(self, sort):
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everything = tm.makeDateIndex(10)
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first = everything[:5]
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second = everything[5:]
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union = first.union(second, sort=sort)
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tm.assert_index_equal(union, everything)
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@pytest.mark.parametrize("box", [np.array, Series, list])
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def test_union3(self, sort, box):
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everything = tm.makeDateIndex(10)
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first = everything[:5]
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second = everything[5:]
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# GH 10149 support listlike inputs other than Index objects
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expected = first.union(second, sort=sort)
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case = box(second.values)
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result = first.union(case, sort=sort)
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tm.assert_index_equal(result, expected)
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@pytest.mark.parametrize("tz", tz)
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def test_union(self, tz, sort):
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rng1 = date_range("1/1/2000", freq="D", periods=5, tz=tz)
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other1 = date_range("1/6/2000", freq="D", periods=5, tz=tz)
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expected1 = date_range("1/1/2000", freq="D", periods=10, tz=tz)
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expected1_notsorted = DatetimeIndex(list(other1) + list(rng1))
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rng2 = date_range("1/1/2000", freq="D", periods=5, tz=tz)
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other2 = date_range("1/4/2000", freq="D", periods=5, tz=tz)
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expected2 = date_range("1/1/2000", freq="D", periods=8, tz=tz)
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expected2_notsorted = DatetimeIndex(list(other2) + list(rng2[:3]))
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rng3 = date_range("1/1/2000", freq="D", periods=5, tz=tz)
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other3 = DatetimeIndex([], tz=tz)
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expected3 = date_range("1/1/2000", freq="D", periods=5, tz=tz)
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expected3_notsorted = rng3
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for rng, other, exp, exp_notsorted in [
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(rng1, other1, expected1, expected1_notsorted),
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(rng2, other2, expected2, expected2_notsorted),
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(rng3, other3, expected3, expected3_notsorted),
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]:
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result_union = rng.union(other, sort=sort)
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tm.assert_index_equal(result_union, exp)
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result_union = other.union(rng, sort=sort)
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if sort is None:
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tm.assert_index_equal(result_union, exp)
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else:
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tm.assert_index_equal(result_union, exp_notsorted)
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def test_union_coverage(self, sort):
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idx = DatetimeIndex(["2000-01-03", "2000-01-01", "2000-01-02"])
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ordered = DatetimeIndex(idx.sort_values(), freq="infer")
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result = ordered.union(idx, sort=sort)
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tm.assert_index_equal(result, ordered)
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result = ordered[:0].union(ordered, sort=sort)
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tm.assert_index_equal(result, ordered)
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assert result.freq == ordered.freq
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def test_union_bug_1730(self, sort):
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rng_a = date_range("1/1/2012", periods=4, freq="3H")
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rng_b = date_range("1/1/2012", periods=4, freq="4H")
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result = rng_a.union(rng_b, sort=sort)
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exp = list(rng_a) + list(rng_b[1:])
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if sort is None:
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exp = DatetimeIndex(sorted(exp))
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else:
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exp = DatetimeIndex(exp)
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tm.assert_index_equal(result, exp)
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def test_union_bug_1745(self, sort):
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left = DatetimeIndex(["2012-05-11 15:19:49.695000"])
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right = DatetimeIndex(
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[
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"2012-05-29 13:04:21.322000",
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"2012-05-11 15:27:24.873000",
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"2012-05-11 15:31:05.350000",
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]
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)
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result = left.union(right, sort=sort)
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exp = DatetimeIndex(
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[
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"2012-05-11 15:19:49.695000",
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"2012-05-29 13:04:21.322000",
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"2012-05-11 15:27:24.873000",
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"2012-05-11 15:31:05.350000",
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]
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)
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if sort is None:
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exp = exp.sort_values()
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tm.assert_index_equal(result, exp)
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def test_union_bug_4564(self, sort):
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from pandas import DateOffset
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left = date_range("2013-01-01", "2013-02-01")
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right = left + DateOffset(minutes=15)
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result = left.union(right, sort=sort)
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exp = list(left) + list(right)
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if sort is None:
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exp = DatetimeIndex(sorted(exp))
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else:
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exp = DatetimeIndex(exp)
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tm.assert_index_equal(result, exp)
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def test_union_freq_both_none(self, sort):
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# GH11086
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expected = bdate_range("20150101", periods=10)
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expected._data.freq = None
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result = expected.union(expected, sort=sort)
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tm.assert_index_equal(result, expected)
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assert result.freq is None
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def test_union_freq_infer(self):
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# When taking the union of two DatetimeIndexes, we infer
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# a freq even if the arguments don't have freq. This matches
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# TimedeltaIndex behavior.
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dti = date_range("2016-01-01", periods=5)
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left = dti[[0, 1, 3, 4]]
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right = dti[[2, 3, 1]]
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assert left.freq is None
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assert right.freq is None
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result = left.union(right)
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tm.assert_index_equal(result, dti)
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assert result.freq == "D"
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def test_union_dataframe_index(self):
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rng1 = date_range("1/1/1999", "1/1/2012", freq="MS")
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s1 = Series(np.random.randn(len(rng1)), rng1)
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rng2 = date_range("1/1/1980", "12/1/2001", freq="MS")
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s2 = Series(np.random.randn(len(rng2)), rng2)
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df = DataFrame({"s1": s1, "s2": s2})
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exp = date_range("1/1/1980", "1/1/2012", freq="MS")
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tm.assert_index_equal(df.index, exp)
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def test_union_with_DatetimeIndex(self, sort):
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i1 = Int64Index(np.arange(0, 20, 2))
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i2 = date_range(start="2012-01-03 00:00:00", periods=10, freq="D")
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# Works
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i1.union(i2, sort=sort)
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# Fails with "AttributeError: can't set attribute"
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i2.union(i1, sort=sort)
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# TODO: moved from test_datetimelike; de-duplicate with version below
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def test_intersection2(self):
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first = tm.makeDateIndex(10)
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second = first[5:]
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intersect = first.intersection(second)
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assert tm.equalContents(intersect, second)
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# GH 10149
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cases = [klass(second.values) for klass in [np.array, Series, list]]
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for case in cases:
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result = first.intersection(case)
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assert tm.equalContents(result, second)
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third = Index(["a", "b", "c"])
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result = first.intersection(third)
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expected = Index([], dtype=object)
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tm.assert_index_equal(result, expected)
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@pytest.mark.parametrize(
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"tz", [None, "Asia/Tokyo", "US/Eastern", "dateutil/US/Pacific"]
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)
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def test_intersection(self, tz, sort):
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# GH 4690 (with tz)
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base = date_range("6/1/2000", "6/30/2000", freq="D", name="idx")
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# if target has the same name, it is preserved
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rng2 = date_range("5/15/2000", "6/20/2000", freq="D", name="idx")
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expected2 = date_range("6/1/2000", "6/20/2000", freq="D", name="idx")
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# if target name is different, it will be reset
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rng3 = date_range("5/15/2000", "6/20/2000", freq="D", name="other")
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expected3 = date_range("6/1/2000", "6/20/2000", freq="D", name=None)
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rng4 = date_range("7/1/2000", "7/31/2000", freq="D", name="idx")
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expected4 = DatetimeIndex([], freq="D", name="idx")
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for (rng, expected) in [
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(rng2, expected2),
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(rng3, expected3),
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(rng4, expected4),
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]:
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result = base.intersection(rng)
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tm.assert_index_equal(result, expected)
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assert result.freq == expected.freq
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# non-monotonic
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base = DatetimeIndex(
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["2011-01-05", "2011-01-04", "2011-01-02", "2011-01-03"], tz=tz, name="idx"
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)
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rng2 = DatetimeIndex(
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["2011-01-04", "2011-01-02", "2011-02-02", "2011-02-03"], tz=tz, name="idx"
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)
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expected2 = DatetimeIndex(["2011-01-04", "2011-01-02"], tz=tz, name="idx")
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rng3 = DatetimeIndex(
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["2011-01-04", "2011-01-02", "2011-02-02", "2011-02-03"],
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tz=tz,
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name="other",
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)
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expected3 = DatetimeIndex(["2011-01-04", "2011-01-02"], tz=tz, name=None)
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# GH 7880
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rng4 = date_range("7/1/2000", "7/31/2000", freq="D", tz=tz, name="idx")
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expected4 = DatetimeIndex([], tz=tz, name="idx")
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assert expected4.freq is None
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for (rng, expected) in [
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(rng2, expected2),
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(rng3, expected3),
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(rng4, expected4),
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]:
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result = base.intersection(rng, sort=sort)
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if sort is None:
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expected = expected.sort_values()
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tm.assert_index_equal(result, expected)
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assert result.freq == expected.freq
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# parametrize over both anchored and non-anchored freqs, as they
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# have different code paths
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@pytest.mark.parametrize("freq", ["T", "B"])
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def test_intersection_empty(self, tz_aware_fixture, freq):
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# empty same freq GH2129
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tz = tz_aware_fixture
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rng = date_range("6/1/2000", "6/15/2000", freq=freq, tz=tz)
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result = rng[0:0].intersection(rng)
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assert len(result) == 0
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assert result.freq == rng.freq
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result = rng.intersection(rng[0:0])
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assert len(result) == 0
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assert result.freq == rng.freq
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# no overlap GH#33604
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check_freq = freq != "T" # We don't preserve freq on non-anchored offsets
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result = rng[:3].intersection(rng[-3:])
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tm.assert_index_equal(result, rng[:0])
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if check_freq:
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# We don't preserve freq on non-anchored offsets
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assert result.freq == rng.freq
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# swapped left and right
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result = rng[-3:].intersection(rng[:3])
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tm.assert_index_equal(result, rng[:0])
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if check_freq:
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# We don't preserve freq on non-anchored offsets
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assert result.freq == rng.freq
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def test_intersection_bug_1708(self):
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from pandas import DateOffset
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index_1 = date_range("1/1/2012", periods=4, freq="12H")
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index_2 = index_1 + DateOffset(hours=1)
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with tm.assert_produces_warning(FutureWarning):
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result = index_1 & index_2
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assert len(result) == 0
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@pytest.mark.parametrize("tz", tz)
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def test_difference(self, tz, sort):
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rng_dates = ["1/2/2000", "1/3/2000", "1/1/2000", "1/4/2000", "1/5/2000"]
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rng1 = DatetimeIndex(rng_dates, tz=tz)
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other1 = date_range("1/6/2000", freq="D", periods=5, tz=tz)
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expected1 = DatetimeIndex(rng_dates, tz=tz)
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rng2 = DatetimeIndex(rng_dates, tz=tz)
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other2 = date_range("1/4/2000", freq="D", periods=5, tz=tz)
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expected2 = DatetimeIndex(rng_dates[:3], tz=tz)
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rng3 = DatetimeIndex(rng_dates, tz=tz)
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other3 = DatetimeIndex([], tz=tz)
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expected3 = DatetimeIndex(rng_dates, tz=tz)
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for rng, other, expected in [
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(rng1, other1, expected1),
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(rng2, other2, expected2),
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(rng3, other3, expected3),
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]:
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result_diff = rng.difference(other, sort)
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if sort is None:
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expected = expected.sort_values()
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tm.assert_index_equal(result_diff, expected)
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def test_difference_freq(self, sort):
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# GH14323: difference of DatetimeIndex should not preserve frequency
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index = date_range("20160920", "20160925", freq="D")
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other = date_range("20160921", "20160924", freq="D")
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expected = DatetimeIndex(["20160920", "20160925"], freq=None)
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idx_diff = index.difference(other, sort)
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tm.assert_index_equal(idx_diff, expected)
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tm.assert_attr_equal("freq", idx_diff, expected)
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|
||
|
|
other = date_range("20160922", "20160925", freq="D")
|
||
|
|
idx_diff = index.difference(other, sort)
|
||
|
|
expected = DatetimeIndex(["20160920", "20160921"], freq=None)
|
||
|
|
tm.assert_index_equal(idx_diff, expected)
|
||
|
|
tm.assert_attr_equal("freq", idx_diff, expected)
|
||
|
|
|
||
|
|
def test_datetimeindex_diff(self, sort):
|
||
|
|
dti1 = date_range(freq="Q-JAN", start=datetime(1997, 12, 31), periods=100)
|
||
|
|
dti2 = date_range(freq="Q-JAN", start=datetime(1997, 12, 31), periods=98)
|
||
|
|
assert len(dti1.difference(dti2, sort)) == 2
|
||
|
|
|
||
|
|
@pytest.mark.parametrize("tz", [None, "Asia/Tokyo", "US/Eastern"])
|
||
|
|
def test_setops_preserve_freq(self, tz):
|
||
|
|
rng = date_range("1/1/2000", "1/1/2002", name="idx", tz=tz)
|
||
|
|
|
||
|
|
result = rng[:50].union(rng[50:100])
|
||
|
|
assert result.name == rng.name
|
||
|
|
assert result.freq == rng.freq
|
||
|
|
assert result.tz == rng.tz
|
||
|
|
|
||
|
|
result = rng[:50].union(rng[30:100])
|
||
|
|
assert result.name == rng.name
|
||
|
|
assert result.freq == rng.freq
|
||
|
|
assert result.tz == rng.tz
|
||
|
|
|
||
|
|
result = rng[:50].union(rng[60:100])
|
||
|
|
assert result.name == rng.name
|
||
|
|
assert result.freq is None
|
||
|
|
assert result.tz == rng.tz
|
||
|
|
|
||
|
|
result = rng[:50].intersection(rng[25:75])
|
||
|
|
assert result.name == rng.name
|
||
|
|
assert result.freqstr == "D"
|
||
|
|
assert result.tz == rng.tz
|
||
|
|
|
||
|
|
nofreq = DatetimeIndex(list(rng[25:75]), name="other")
|
||
|
|
result = rng[:50].union(nofreq)
|
||
|
|
assert result.name is None
|
||
|
|
assert result.freq == rng.freq
|
||
|
|
assert result.tz == rng.tz
|
||
|
|
|
||
|
|
result = rng[:50].intersection(nofreq)
|
||
|
|
assert result.name is None
|
||
|
|
assert result.freq == rng.freq
|
||
|
|
assert result.tz == rng.tz
|
||
|
|
|
||
|
|
|
||
|
|
class TestBusinessDatetimeIndex:
|
||
|
|
def setup_method(self, method):
|
||
|
|
self.rng = bdate_range(START, END)
|
||
|
|
|
||
|
|
def test_union(self, sort):
|
||
|
|
# overlapping
|
||
|
|
left = self.rng[:10]
|
||
|
|
right = self.rng[5:10]
|
||
|
|
|
||
|
|
the_union = left.union(right, sort=sort)
|
||
|
|
assert isinstance(the_union, DatetimeIndex)
|
||
|
|
|
||
|
|
# non-overlapping, gap in middle
|
||
|
|
left = self.rng[:5]
|
||
|
|
right = self.rng[10:]
|
||
|
|
|
||
|
|
the_union = left.union(right, sort=sort)
|
||
|
|
assert isinstance(the_union, Index)
|
||
|
|
|
||
|
|
# non-overlapping, no gap
|
||
|
|
left = self.rng[:5]
|
||
|
|
right = self.rng[5:10]
|
||
|
|
|
||
|
|
the_union = left.union(right, sort=sort)
|
||
|
|
assert isinstance(the_union, DatetimeIndex)
|
||
|
|
|
||
|
|
# order does not matter
|
||
|
|
if sort is None:
|
||
|
|
tm.assert_index_equal(right.union(left, sort=sort), the_union)
|
||
|
|
else:
|
||
|
|
expected = DatetimeIndex(list(right) + list(left))
|
||
|
|
tm.assert_index_equal(right.union(left, sort=sort), expected)
|
||
|
|
|
||
|
|
# overlapping, but different offset
|
||
|
|
rng = date_range(START, END, freq=BMonthEnd())
|
||
|
|
|
||
|
|
the_union = self.rng.union(rng, sort=sort)
|
||
|
|
assert isinstance(the_union, DatetimeIndex)
|
||
|
|
|
||
|
|
def test_union_not_cacheable(self, sort):
|
||
|
|
rng = date_range("1/1/2000", periods=50, freq=Minute())
|
||
|
|
rng1 = rng[10:]
|
||
|
|
rng2 = rng[:25]
|
||
|
|
the_union = rng1.union(rng2, sort=sort)
|
||
|
|
if sort is None:
|
||
|
|
tm.assert_index_equal(the_union, rng)
|
||
|
|
else:
|
||
|
|
expected = DatetimeIndex(list(rng[10:]) + list(rng[:10]))
|
||
|
|
tm.assert_index_equal(the_union, expected)
|
||
|
|
|
||
|
|
rng1 = rng[10:]
|
||
|
|
rng2 = rng[15:35]
|
||
|
|
the_union = rng1.union(rng2, sort=sort)
|
||
|
|
expected = rng[10:]
|
||
|
|
tm.assert_index_equal(the_union, expected)
|
||
|
|
|
||
|
|
def test_intersection(self):
|
||
|
|
rng = date_range("1/1/2000", periods=50, freq=Minute())
|
||
|
|
rng1 = rng[10:]
|
||
|
|
rng2 = rng[:25]
|
||
|
|
the_int = rng1.intersection(rng2)
|
||
|
|
expected = rng[10:25]
|
||
|
|
tm.assert_index_equal(the_int, expected)
|
||
|
|
assert isinstance(the_int, DatetimeIndex)
|
||
|
|
assert the_int.freq == rng.freq
|
||
|
|
|
||
|
|
the_int = rng1.intersection(rng2.view(DatetimeIndex))
|
||
|
|
tm.assert_index_equal(the_int, expected)
|
||
|
|
|
||
|
|
# non-overlapping
|
||
|
|
the_int = rng[:10].intersection(rng[10:])
|
||
|
|
expected = DatetimeIndex([])
|
||
|
|
tm.assert_index_equal(the_int, expected)
|
||
|
|
|
||
|
|
def test_intersection_bug(self):
|
||
|
|
# GH #771
|
||
|
|
a = bdate_range("11/30/2011", "12/31/2011")
|
||
|
|
b = bdate_range("12/10/2011", "12/20/2011")
|
||
|
|
result = a.intersection(b)
|
||
|
|
tm.assert_index_equal(result, b)
|
||
|
|
assert result.freq == b.freq
|
||
|
|
|
||
|
|
def test_intersection_list(self):
|
||
|
|
# GH#35876
|
||
|
|
# values is not an Index -> no name -> retain "a"
|
||
|
|
values = [pd.Timestamp("2020-01-01"), pd.Timestamp("2020-02-01")]
|
||
|
|
idx = DatetimeIndex(values, name="a")
|
||
|
|
res = idx.intersection(values)
|
||
|
|
tm.assert_index_equal(res, idx)
|
||
|
|
|
||
|
|
def test_month_range_union_tz_pytz(self, sort):
|
||
|
|
from pytz import timezone
|
||
|
|
|
||
|
|
tz = timezone("US/Eastern")
|
||
|
|
|
||
|
|
early_start = datetime(2011, 1, 1)
|
||
|
|
early_end = datetime(2011, 3, 1)
|
||
|
|
|
||
|
|
late_start = datetime(2011, 3, 1)
|
||
|
|
late_end = datetime(2011, 5, 1)
|
||
|
|
|
||
|
|
early_dr = date_range(start=early_start, end=early_end, tz=tz, freq=MonthEnd())
|
||
|
|
late_dr = date_range(start=late_start, end=late_end, tz=tz, freq=MonthEnd())
|
||
|
|
|
||
|
|
early_dr.union(late_dr, sort=sort)
|
||
|
|
|
||
|
|
@td.skip_if_windows_python_3
|
||
|
|
def test_month_range_union_tz_dateutil(self, sort):
|
||
|
|
from pandas._libs.tslibs.timezones import dateutil_gettz
|
||
|
|
|
||
|
|
tz = dateutil_gettz("US/Eastern")
|
||
|
|
|
||
|
|
early_start = datetime(2011, 1, 1)
|
||
|
|
early_end = datetime(2011, 3, 1)
|
||
|
|
|
||
|
|
late_start = datetime(2011, 3, 1)
|
||
|
|
late_end = datetime(2011, 5, 1)
|
||
|
|
|
||
|
|
early_dr = date_range(start=early_start, end=early_end, tz=tz, freq=MonthEnd())
|
||
|
|
late_dr = date_range(start=late_start, end=late_end, tz=tz, freq=MonthEnd())
|
||
|
|
|
||
|
|
early_dr.union(late_dr, sort=sort)
|
||
|
|
|
||
|
|
@pytest.mark.parametrize("sort", [False, None])
|
||
|
|
def test_intersection_duplicates(self, sort):
|
||
|
|
# GH#38196
|
||
|
|
idx1 = Index(
|
||
|
|
[
|
||
|
|
pd.Timestamp("2019-12-13"),
|
||
|
|
pd.Timestamp("2019-12-12"),
|
||
|
|
pd.Timestamp("2019-12-12"),
|
||
|
|
]
|
||
|
|
)
|
||
|
|
result = idx1.intersection(idx1, sort=sort)
|
||
|
|
expected = Index([pd.Timestamp("2019-12-13"), pd.Timestamp("2019-12-12")])
|
||
|
|
tm.assert_index_equal(result, expected)
|
||
|
|
|
||
|
|
|
||
|
|
class TestCustomDatetimeIndex:
|
||
|
|
def setup_method(self, method):
|
||
|
|
self.rng = bdate_range(START, END, freq="C")
|
||
|
|
|
||
|
|
def test_union(self, sort):
|
||
|
|
# overlapping
|
||
|
|
left = self.rng[:10]
|
||
|
|
right = self.rng[5:10]
|
||
|
|
|
||
|
|
the_union = left.union(right, sort=sort)
|
||
|
|
assert isinstance(the_union, DatetimeIndex)
|
||
|
|
|
||
|
|
# non-overlapping, gap in middle
|
||
|
|
left = self.rng[:5]
|
||
|
|
right = self.rng[10:]
|
||
|
|
|
||
|
|
the_union = left.union(right, sort)
|
||
|
|
assert isinstance(the_union, Index)
|
||
|
|
|
||
|
|
# non-overlapping, no gap
|
||
|
|
left = self.rng[:5]
|
||
|
|
right = self.rng[5:10]
|
||
|
|
|
||
|
|
the_union = left.union(right, sort=sort)
|
||
|
|
assert isinstance(the_union, DatetimeIndex)
|
||
|
|
|
||
|
|
# order does not matter
|
||
|
|
if sort is None:
|
||
|
|
tm.assert_index_equal(right.union(left, sort=sort), the_union)
|
||
|
|
|
||
|
|
# overlapping, but different offset
|
||
|
|
rng = date_range(START, END, freq=BMonthEnd())
|
||
|
|
|
||
|
|
the_union = self.rng.union(rng, sort=sort)
|
||
|
|
assert isinstance(the_union, DatetimeIndex)
|
||
|
|
|
||
|
|
def test_intersection_bug(self):
|
||
|
|
# GH #771
|
||
|
|
a = bdate_range("11/30/2011", "12/31/2011", freq="C")
|
||
|
|
b = bdate_range("12/10/2011", "12/20/2011", freq="C")
|
||
|
|
result = a.intersection(b)
|
||
|
|
tm.assert_index_equal(result, b)
|
||
|
|
assert result.freq == b.freq
|