102 lines
3.0 KiB
Python
102 lines
3.0 KiB
Python
import pytest
|
|
|
|
from pandas._libs.tslibs import Timestamp
|
|
|
|
from pandas import (
|
|
DataFrame,
|
|
Series,
|
|
_testing as tm,
|
|
date_range,
|
|
errors,
|
|
read_hdf,
|
|
)
|
|
from pandas.tests.io.pytables.common import (
|
|
_maybe_remove,
|
|
ensure_clean_store,
|
|
)
|
|
|
|
pytestmark = pytest.mark.single_cpu
|
|
|
|
|
|
def test_retain_index_attributes(setup_path):
|
|
# GH 3499, losing frequency info on index recreation
|
|
df = DataFrame(
|
|
{"A": Series(range(3), index=date_range("2000-1-1", periods=3, freq="H"))}
|
|
)
|
|
|
|
with ensure_clean_store(setup_path) as store:
|
|
_maybe_remove(store, "data")
|
|
store.put("data", df, format="table")
|
|
|
|
result = store.get("data")
|
|
tm.assert_frame_equal(df, result)
|
|
|
|
for attr in ["freq", "tz", "name"]:
|
|
for idx in ["index", "columns"]:
|
|
assert getattr(getattr(df, idx), attr, None) == getattr(
|
|
getattr(result, idx), attr, None
|
|
)
|
|
|
|
# try to append a table with a different frequency
|
|
with tm.assert_produces_warning(errors.AttributeConflictWarning):
|
|
df2 = DataFrame(
|
|
{
|
|
"A": Series(
|
|
range(3), index=date_range("2002-1-1", periods=3, freq="D")
|
|
)
|
|
}
|
|
)
|
|
store.append("data", df2)
|
|
|
|
assert store.get_storer("data").info["index"]["freq"] is None
|
|
|
|
# this is ok
|
|
_maybe_remove(store, "df2")
|
|
df2 = DataFrame(
|
|
{
|
|
"A": Series(
|
|
range(3),
|
|
index=[
|
|
Timestamp("20010101"),
|
|
Timestamp("20010102"),
|
|
Timestamp("20020101"),
|
|
],
|
|
)
|
|
}
|
|
)
|
|
store.append("df2", df2)
|
|
df3 = DataFrame(
|
|
{"A": Series(range(3), index=date_range("2002-1-1", periods=3, freq="D"))}
|
|
)
|
|
store.append("df2", df3)
|
|
|
|
|
|
def test_retain_index_attributes2(tmp_path, setup_path):
|
|
path = tmp_path / setup_path
|
|
|
|
with tm.assert_produces_warning(errors.AttributeConflictWarning):
|
|
df = DataFrame(
|
|
{"A": Series(range(3), index=date_range("2000-1-1", periods=3, freq="H"))}
|
|
)
|
|
df.to_hdf(path, "data", mode="w", append=True)
|
|
df2 = DataFrame(
|
|
{"A": Series(range(3), index=date_range("2002-1-1", periods=3, freq="D"))}
|
|
)
|
|
|
|
df2.to_hdf(path, "data", append=True)
|
|
|
|
idx = date_range("2000-1-1", periods=3, freq="H")
|
|
idx.name = "foo"
|
|
df = DataFrame({"A": Series(range(3), index=idx)})
|
|
df.to_hdf(path, "data", mode="w", append=True)
|
|
|
|
assert read_hdf(path, "data").index.name == "foo"
|
|
|
|
with tm.assert_produces_warning(errors.AttributeConflictWarning):
|
|
idx2 = date_range("2001-1-1", periods=3, freq="H")
|
|
idx2.name = "bar"
|
|
df2 = DataFrame({"A": Series(range(3), index=idx2)})
|
|
df2.to_hdf(path, "data", append=True)
|
|
|
|
assert read_hdf(path, "data").index.name is None
|