import pytest
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from pandas import (
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DataFrame,
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HDFStore,
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_testing as tm,
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)
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from pandas.tests.io.pytables.common import (
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ensure_clean_store,
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tables,
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)
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pytestmark = pytest.mark.single_cpu
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def test_keys(setup_path):
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with ensure_clean_store(setup_path) as store:
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store["a"] = tm.makeTimeSeries()
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store["b"] = tm.makeStringSeries()
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store["c"] = tm.makeDataFrame()
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assert len(store) == 3
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expected = {"/a", "/b", "/c"}
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assert set(store.keys()) == expected
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assert set(store) == expected
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def test_non_pandas_keys(tmp_path, setup_path):
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class Table1(tables.IsDescription):
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value1 = tables.Float32Col()
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class Table2(tables.IsDescription):
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value2 = tables.Float32Col()
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class Table3(tables.IsDescription):
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value3 = tables.Float32Col()
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path = tmp_path / setup_path
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with tables.open_file(path, mode="w") as h5file:
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group = h5file.create_group("/", "group")
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h5file.create_table(group, "table1", Table1, "Table 1")
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h5file.create_table(group, "table2", Table2, "Table 2")
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h5file.create_table(group, "table3", Table3, "Table 3")
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with HDFStore(path) as store:
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assert len(store.keys(include="native")) == 3
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expected = {"/group/table1", "/group/table2", "/group/table3"}
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assert set(store.keys(include="native")) == expected
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assert set(store.keys(include="pandas")) == set()
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for name in expected:
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df = store.get(name)
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assert len(df.columns) == 1
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def test_keys_illegal_include_keyword_value(setup_path):
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with ensure_clean_store(setup_path) as store:
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with pytest.raises(
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ValueError,
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match="`include` should be either 'pandas' or 'native' but is 'illegal'",
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):
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store.keys(include="illegal")
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def test_keys_ignore_hdf_softlink(setup_path):
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# GH 20523
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# Puts a softlink into HDF file and rereads
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with ensure_clean_store(setup_path) as store:
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df = DataFrame({"A": range(5), "B": range(5)})
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store.put("df", df)
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assert store.keys() == ["/df"]
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store._handle.create_soft_link(store._handle.root, "symlink", "df")
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# Should ignore the softlink
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assert store.keys() == ["/df"]
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