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| import numpy as np
|
| import pandas as pd
| from pandas import (
| PeriodIndex,
| date_range,
| period_range,
| )
| import pandas._testing as tm
|
|
| def _permute(obj):
| return obj.take(np.random.permutation(len(obj)))
|
|
| class TestPeriodIndex:
| def test_union(self, sort):
| # union
| other1 = period_range("1/1/2000", freq="D", periods=5)
| rng1 = period_range("1/6/2000", freq="D", periods=5)
| expected1 = PeriodIndex(
| [
| "2000-01-06",
| "2000-01-07",
| "2000-01-08",
| "2000-01-09",
| "2000-01-10",
| "2000-01-01",
| "2000-01-02",
| "2000-01-03",
| "2000-01-04",
| "2000-01-05",
| ],
| freq="D",
| )
|
| rng2 = period_range("1/1/2000", freq="D", periods=5)
| other2 = period_range("1/4/2000", freq="D", periods=5)
| expected2 = period_range("1/1/2000", freq="D", periods=8)
|
| rng3 = period_range("1/1/2000", freq="D", periods=5)
| other3 = PeriodIndex([], freq="D")
| expected3 = period_range("1/1/2000", freq="D", periods=5)
|
| rng4 = period_range("2000-01-01 09:00", freq="H", periods=5)
| other4 = period_range("2000-01-02 09:00", freq="H", periods=5)
| expected4 = PeriodIndex(
| [
| "2000-01-01 09:00",
| "2000-01-01 10:00",
| "2000-01-01 11:00",
| "2000-01-01 12:00",
| "2000-01-01 13:00",
| "2000-01-02 09:00",
| "2000-01-02 10:00",
| "2000-01-02 11:00",
| "2000-01-02 12:00",
| "2000-01-02 13:00",
| ],
| freq="H",
| )
|
| rng5 = PeriodIndex(
| ["2000-01-01 09:01", "2000-01-01 09:03", "2000-01-01 09:05"], freq="T"
| )
| other5 = PeriodIndex(
| ["2000-01-01 09:01", "2000-01-01 09:05", "2000-01-01 09:08"], freq="T"
| )
| expected5 = PeriodIndex(
| [
| "2000-01-01 09:01",
| "2000-01-01 09:03",
| "2000-01-01 09:05",
| "2000-01-01 09:08",
| ],
| freq="T",
| )
|
| rng6 = period_range("2000-01-01", freq="M", periods=7)
| other6 = period_range("2000-04-01", freq="M", periods=7)
| expected6 = period_range("2000-01-01", freq="M", periods=10)
|
| rng7 = period_range("2003-01-01", freq="A", periods=5)
| other7 = period_range("1998-01-01", freq="A", periods=8)
| expected7 = PeriodIndex(
| [
| "2003",
| "2004",
| "2005",
| "2006",
| "2007",
| "1998",
| "1999",
| "2000",
| "2001",
| "2002",
| ],
| freq="A",
| )
|
| rng8 = PeriodIndex(
| ["1/3/2000", "1/2/2000", "1/1/2000", "1/5/2000", "1/4/2000"], freq="D"
| )
| other8 = period_range("1/6/2000", freq="D", periods=5)
| expected8 = PeriodIndex(
| [
| "1/3/2000",
| "1/2/2000",
| "1/1/2000",
| "1/5/2000",
| "1/4/2000",
| "1/6/2000",
| "1/7/2000",
| "1/8/2000",
| "1/9/2000",
| "1/10/2000",
| ],
| freq="D",
| )
|
| for rng, other, expected in [
| (rng1, other1, expected1),
| (rng2, other2, expected2),
| (rng3, other3, expected3),
| (rng4, other4, expected4),
| (rng5, other5, expected5),
| (rng6, other6, expected6),
| (rng7, other7, expected7),
| (rng8, other8, expected8),
| ]:
| result_union = rng.union(other, sort=sort)
| if sort is None:
| expected = expected.sort_values()
| tm.assert_index_equal(result_union, expected)
|
| def test_union_misc(self, sort):
| index = period_range("1/1/2000", "1/20/2000", freq="D")
|
| result = index[:-5].union(index[10:], sort=sort)
| tm.assert_index_equal(result, index)
|
| # not in order
| result = _permute(index[:-5]).union(_permute(index[10:]), sort=sort)
| if sort is None:
| tm.assert_index_equal(result, index)
| assert tm.equalContents(result, index)
|
| # cast if different frequencies
| index = period_range("1/1/2000", "1/20/2000", freq="D")
| index2 = period_range("1/1/2000", "1/20/2000", freq="W-WED")
| result = index.union(index2, sort=sort)
| expected = index.astype(object).union(index2.astype(object), sort=sort)
| tm.assert_index_equal(result, expected)
|
| def test_intersection(self, sort):
| index = period_range("1/1/2000", "1/20/2000", freq="D")
|
| result = index[:-5].intersection(index[10:], sort=sort)
| tm.assert_index_equal(result, index[10:-5])
|
| # not in order
| left = _permute(index[:-5])
| right = _permute(index[10:])
| result = left.intersection(right, sort=sort)
| if sort is None:
| tm.assert_index_equal(result, index[10:-5])
| assert tm.equalContents(result, index[10:-5])
|
| # cast if different frequencies
| index = period_range("1/1/2000", "1/20/2000", freq="D")
| index2 = period_range("1/1/2000", "1/20/2000", freq="W-WED")
|
| result = index.intersection(index2, sort=sort)
| expected = pd.Index([], dtype=object)
| tm.assert_index_equal(result, expected)
|
| index3 = period_range("1/1/2000", "1/20/2000", freq="2D")
| result = index.intersection(index3, sort=sort)
| tm.assert_index_equal(result, expected)
|
| def test_intersection_cases(self, sort):
| base = period_range("6/1/2000", "6/30/2000", freq="D", name="idx")
|
| # if target has the same name, it is preserved
| rng2 = period_range("5/15/2000", "6/20/2000", freq="D", name="idx")
| expected2 = period_range("6/1/2000", "6/20/2000", freq="D", name="idx")
|
| # if target name is different, it will be reset
| rng3 = period_range("5/15/2000", "6/20/2000", freq="D", name="other")
| expected3 = period_range("6/1/2000", "6/20/2000", freq="D", name=None)
|
| rng4 = period_range("7/1/2000", "7/31/2000", freq="D", name="idx")
| expected4 = PeriodIndex([], name="idx", freq="D")
|
| for rng, expected in [
| (rng2, expected2),
| (rng3, expected3),
| (rng4, expected4),
| ]:
| result = base.intersection(rng, sort=sort)
| tm.assert_index_equal(result, expected)
| assert result.name == expected.name
| assert result.freq == expected.freq
|
| # non-monotonic
| base = PeriodIndex(
| ["2011-01-05", "2011-01-04", "2011-01-02", "2011-01-03"],
| freq="D",
| name="idx",
| )
|
| rng2 = PeriodIndex(
| ["2011-01-04", "2011-01-02", "2011-02-02", "2011-02-03"],
| freq="D",
| name="idx",
| )
| expected2 = PeriodIndex(["2011-01-04", "2011-01-02"], freq="D", name="idx")
|
| rng3 = PeriodIndex(
| ["2011-01-04", "2011-01-02", "2011-02-02", "2011-02-03"],
| freq="D",
| name="other",
| )
| expected3 = PeriodIndex(["2011-01-04", "2011-01-02"], freq="D", name=None)
|
| rng4 = period_range("7/1/2000", "7/31/2000", freq="D", name="idx")
| expected4 = PeriodIndex([], freq="D", name="idx")
|
| for rng, expected in [
| (rng2, expected2),
| (rng3, expected3),
| (rng4, expected4),
| ]:
| result = base.intersection(rng, sort=sort)
| if sort is None:
| expected = expected.sort_values()
| tm.assert_index_equal(result, expected)
| assert result.name == expected.name
| assert result.freq == "D"
|
| # empty same freq
| rng = date_range("6/1/2000", "6/15/2000", freq="T")
| result = rng[0:0].intersection(rng)
| assert len(result) == 0
|
| result = rng.intersection(rng[0:0])
| assert len(result) == 0
|
| def test_difference(self, sort):
| # diff
| period_rng = ["1/3/2000", "1/2/2000", "1/1/2000", "1/5/2000", "1/4/2000"]
| rng1 = PeriodIndex(period_rng, freq="D")
| other1 = period_range("1/6/2000", freq="D", periods=5)
| expected1 = rng1
|
| rng2 = PeriodIndex(period_rng, freq="D")
| other2 = period_range("1/4/2000", freq="D", periods=5)
| expected2 = PeriodIndex(["1/3/2000", "1/2/2000", "1/1/2000"], freq="D")
|
| rng3 = PeriodIndex(period_rng, freq="D")
| other3 = PeriodIndex([], freq="D")
| expected3 = rng3
|
| period_rng = [
| "2000-01-01 10:00",
| "2000-01-01 09:00",
| "2000-01-01 12:00",
| "2000-01-01 11:00",
| "2000-01-01 13:00",
| ]
| rng4 = PeriodIndex(period_rng, freq="H")
| other4 = period_range("2000-01-02 09:00", freq="H", periods=5)
| expected4 = rng4
|
| rng5 = PeriodIndex(
| ["2000-01-01 09:03", "2000-01-01 09:01", "2000-01-01 09:05"], freq="T"
| )
| other5 = PeriodIndex(["2000-01-01 09:01", "2000-01-01 09:05"], freq="T")
| expected5 = PeriodIndex(["2000-01-01 09:03"], freq="T")
|
| period_rng = [
| "2000-02-01",
| "2000-01-01",
| "2000-06-01",
| "2000-07-01",
| "2000-05-01",
| "2000-03-01",
| "2000-04-01",
| ]
| rng6 = PeriodIndex(period_rng, freq="M")
| other6 = period_range("2000-04-01", freq="M", periods=7)
| expected6 = PeriodIndex(["2000-02-01", "2000-01-01", "2000-03-01"], freq="M")
|
| period_rng = ["2003", "2007", "2006", "2005", "2004"]
| rng7 = PeriodIndex(period_rng, freq="A")
| other7 = period_range("1998-01-01", freq="A", periods=8)
| expected7 = PeriodIndex(["2007", "2006"], freq="A")
|
| for rng, other, expected in [
| (rng1, other1, expected1),
| (rng2, other2, expected2),
| (rng3, other3, expected3),
| (rng4, other4, expected4),
| (rng5, other5, expected5),
| (rng6, other6, expected6),
| (rng7, other7, expected7),
| ]:
| result_difference = rng.difference(other, sort=sort)
| if sort is None and len(other):
| # We dont sort (yet?) when empty GH#24959
| expected = expected.sort_values()
| tm.assert_index_equal(result_difference, expected)
|
| def test_difference_freq(self, sort):
| # GH14323: difference of Period MUST preserve frequency
| # but the ability to union results must be preserved
|
| index = period_range("20160920", "20160925", freq="D")
|
| other = period_range("20160921", "20160924", freq="D")
| expected = PeriodIndex(["20160920", "20160925"], freq="D")
| idx_diff = index.difference(other, sort)
| tm.assert_index_equal(idx_diff, expected)
| tm.assert_attr_equal("freq", idx_diff, expected)
|
| other = period_range("20160922", "20160925", freq="D")
| idx_diff = index.difference(other, sort)
| expected = PeriodIndex(["20160920", "20160921"], freq="D")
| tm.assert_index_equal(idx_diff, expected)
| tm.assert_attr_equal("freq", idx_diff, expected)
|
| def test_intersection_equal_duplicates(self):
| # GH#38302
| idx = period_range("2011-01-01", periods=2)
| idx_dup = idx.append(idx)
| result = idx_dup.intersection(idx_dup)
| tm.assert_index_equal(result, idx)
|
| def test_union_duplicates(self):
| # GH#36289
| idx = period_range("2011-01-01", periods=2)
| idx_dup = idx.append(idx)
|
| idx2 = period_range("2011-01-02", periods=2)
| idx2_dup = idx2.append(idx2)
| result = idx_dup.union(idx2_dup)
|
| expected = PeriodIndex(
| [
| "2011-01-01",
| "2011-01-01",
| "2011-01-02",
| "2011-01-02",
| "2011-01-03",
| "2011-01-03",
| ],
| freq="D",
| )
| tm.assert_index_equal(result, expected)
|
|
