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https://github.com/PiBrewing/craftbeerpi4.git
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41 lines
1.2 KiB
Python
41 lines
1.2 KiB
Python
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import numpy as np
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from pandas import DataFrame, Index, PeriodIndex, period_range
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import pandas._testing as tm
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class TestPeriodIndex:
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def test_as_frame_columns(self):
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rng = period_range("1/1/2000", periods=5)
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df = DataFrame(np.random.randn(10, 5), columns=rng)
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ts = df[rng[0]]
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tm.assert_series_equal(ts, df.iloc[:, 0])
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# GH # 1211
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repr(df)
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ts = df["1/1/2000"]
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tm.assert_series_equal(ts, df.iloc[:, 0])
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def test_frame_setitem(self):
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rng = period_range("1/1/2000", periods=5, name="index")
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df = DataFrame(np.random.randn(5, 3), index=rng)
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df["Index"] = rng
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rs = Index(df["Index"])
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tm.assert_index_equal(rs, rng, check_names=False)
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assert rs.name == "Index"
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assert rng.name == "index"
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rs = df.reset_index().set_index("index")
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assert isinstance(rs.index, PeriodIndex)
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tm.assert_index_equal(rs.index, rng)
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def test_frame_index_to_string(self):
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index = PeriodIndex(["2011-1", "2011-2", "2011-3"], freq="M")
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frame = DataFrame(np.random.randn(3, 4), index=index)
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# it works!
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frame.to_string()
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