Updated script that can be controled by Nodejs web app
This commit is contained in:
mac OS
@ -0,0 +1,703 @@
|
||||
"""
|
||||
This module tests the functionality of StringArray and ArrowStringArray.
|
||||
Tests for the str accessors are in pandas/tests/strings/test_string_array.py
|
||||
"""
|
||||
import operator
|
||||
|
||||
import numpy as np
|
||||
import pytest
|
||||
|
||||
from pandas.compat.pyarrow import pa_version_under12p0
|
||||
|
||||
from pandas.core.dtypes.common import is_dtype_equal
|
||||
|
||||
import pandas as pd
|
||||
import pandas._testing as tm
|
||||
from pandas.core.arrays.string_arrow import (
|
||||
ArrowStringArray,
|
||||
ArrowStringArrayNumpySemantics,
|
||||
)
|
||||
|
||||
|
||||
def na_val(dtype):
|
||||
if dtype.storage == "pyarrow_numpy":
|
||||
return np.nan
|
||||
else:
|
||||
return pd.NA
|
||||
|
||||
|
||||
@pytest.fixture
|
||||
def dtype(string_storage):
|
||||
"""Fixture giving StringDtype from parametrized 'string_storage'"""
|
||||
return pd.StringDtype(storage=string_storage)
|
||||
|
||||
|
||||
@pytest.fixture
|
||||
def cls(dtype):
|
||||
"""Fixture giving array type from parametrized 'dtype'"""
|
||||
return dtype.construct_array_type()
|
||||
|
||||
|
||||
def test_repr(dtype):
|
||||
df = pd.DataFrame({"A": pd.array(["a", pd.NA, "b"], dtype=dtype)})
|
||||
if dtype.storage == "pyarrow_numpy":
|
||||
expected = " A\n0 a\n1 NaN\n2 b"
|
||||
else:
|
||||
expected = " A\n0 a\n1 <NA>\n2 b"
|
||||
assert repr(df) == expected
|
||||
|
||||
if dtype.storage == "pyarrow_numpy":
|
||||
expected = "0 a\n1 NaN\n2 b\nName: A, dtype: string"
|
||||
else:
|
||||
expected = "0 a\n1 <NA>\n2 b\nName: A, dtype: string"
|
||||
assert repr(df.A) == expected
|
||||
|
||||
if dtype.storage == "pyarrow":
|
||||
arr_name = "ArrowStringArray"
|
||||
expected = f"<{arr_name}>\n['a', <NA>, 'b']\nLength: 3, dtype: string"
|
||||
elif dtype.storage == "pyarrow_numpy":
|
||||
arr_name = "ArrowStringArrayNumpySemantics"
|
||||
expected = f"<{arr_name}>\n['a', nan, 'b']\nLength: 3, dtype: string"
|
||||
else:
|
||||
arr_name = "StringArray"
|
||||
expected = f"<{arr_name}>\n['a', <NA>, 'b']\nLength: 3, dtype: string"
|
||||
assert repr(df.A.array) == expected
|
||||
|
||||
|
||||
def test_none_to_nan(cls, dtype):
|
||||
a = cls._from_sequence(["a", None, "b"], dtype=dtype)
|
||||
assert a[1] is not None
|
||||
assert a[1] is na_val(a.dtype)
|
||||
|
||||
|
||||
def test_setitem_validates(cls, dtype):
|
||||
arr = cls._from_sequence(["a", "b"], dtype=dtype)
|
||||
|
||||
if cls is pd.arrays.StringArray:
|
||||
msg = "Cannot set non-string value '10' into a StringArray."
|
||||
else:
|
||||
msg = "Scalar must be NA or str"
|
||||
with pytest.raises(TypeError, match=msg):
|
||||
arr[0] = 10
|
||||
|
||||
if cls is pd.arrays.StringArray:
|
||||
msg = "Must provide strings."
|
||||
else:
|
||||
msg = "Scalar must be NA or str"
|
||||
with pytest.raises(TypeError, match=msg):
|
||||
arr[:] = np.array([1, 2])
|
||||
|
||||
|
||||
def test_setitem_with_scalar_string(dtype):
|
||||
# is_float_dtype considers some strings, like 'd', to be floats
|
||||
# which can cause issues.
|
||||
arr = pd.array(["a", "c"], dtype=dtype)
|
||||
arr[0] = "d"
|
||||
expected = pd.array(["d", "c"], dtype=dtype)
|
||||
tm.assert_extension_array_equal(arr, expected)
|
||||
|
||||
|
||||
def test_setitem_with_array_with_missing(dtype):
|
||||
# ensure that when setting with an array of values, we don't mutate the
|
||||
# array `value` in __setitem__(self, key, value)
|
||||
arr = pd.array(["a", "b", "c"], dtype=dtype)
|
||||
value = np.array(["A", None])
|
||||
value_orig = value.copy()
|
||||
arr[[0, 1]] = value
|
||||
|
||||
expected = pd.array(["A", pd.NA, "c"], dtype=dtype)
|
||||
tm.assert_extension_array_equal(arr, expected)
|
||||
tm.assert_numpy_array_equal(value, value_orig)
|
||||
|
||||
|
||||
def test_astype_roundtrip(dtype):
|
||||
ser = pd.Series(pd.date_range("2000", periods=12))
|
||||
ser[0] = None
|
||||
|
||||
casted = ser.astype(dtype)
|
||||
assert is_dtype_equal(casted.dtype, dtype)
|
||||
|
||||
result = casted.astype("datetime64[ns]")
|
||||
tm.assert_series_equal(result, ser)
|
||||
|
||||
# GH#38509 same thing for timedelta64
|
||||
ser2 = ser - ser.iloc[-1]
|
||||
casted2 = ser2.astype(dtype)
|
||||
assert is_dtype_equal(casted2.dtype, dtype)
|
||||
|
||||
result2 = casted2.astype(ser2.dtype)
|
||||
tm.assert_series_equal(result2, ser2)
|
||||
|
||||
|
||||
def test_add(dtype):
|
||||
a = pd.Series(["a", "b", "c", None, None], dtype=dtype)
|
||||
b = pd.Series(["x", "y", None, "z", None], dtype=dtype)
|
||||
|
||||
result = a + b
|
||||
expected = pd.Series(["ax", "by", None, None, None], dtype=dtype)
|
||||
tm.assert_series_equal(result, expected)
|
||||
|
||||
result = a.add(b)
|
||||
tm.assert_series_equal(result, expected)
|
||||
|
||||
result = a.radd(b)
|
||||
expected = pd.Series(["xa", "yb", None, None, None], dtype=dtype)
|
||||
tm.assert_series_equal(result, expected)
|
||||
|
||||
result = a.add(b, fill_value="-")
|
||||
expected = pd.Series(["ax", "by", "c-", "-z", None], dtype=dtype)
|
||||
tm.assert_series_equal(result, expected)
|
||||
|
||||
|
||||
def test_add_2d(dtype, request, arrow_string_storage):
|
||||
if dtype.storage in arrow_string_storage:
|
||||
reason = "Failed: DID NOT RAISE <class 'ValueError'>"
|
||||
mark = pytest.mark.xfail(raises=None, reason=reason)
|
||||
request.applymarker(mark)
|
||||
|
||||
a = pd.array(["a", "b", "c"], dtype=dtype)
|
||||
b = np.array([["a", "b", "c"]], dtype=object)
|
||||
with pytest.raises(ValueError, match="3 != 1"):
|
||||
a + b
|
||||
|
||||
s = pd.Series(a)
|
||||
with pytest.raises(ValueError, match="3 != 1"):
|
||||
s + b
|
||||
|
||||
|
||||
def test_add_sequence(dtype):
|
||||
a = pd.array(["a", "b", None, None], dtype=dtype)
|
||||
other = ["x", None, "y", None]
|
||||
|
||||
result = a + other
|
||||
expected = pd.array(["ax", None, None, None], dtype=dtype)
|
||||
tm.assert_extension_array_equal(result, expected)
|
||||
|
||||
result = other + a
|
||||
expected = pd.array(["xa", None, None, None], dtype=dtype)
|
||||
tm.assert_extension_array_equal(result, expected)
|
||||
|
||||
|
||||
def test_mul(dtype):
|
||||
a = pd.array(["a", "b", None], dtype=dtype)
|
||||
result = a * 2
|
||||
expected = pd.array(["aa", "bb", None], dtype=dtype)
|
||||
tm.assert_extension_array_equal(result, expected)
|
||||
|
||||
result = 2 * a
|
||||
tm.assert_extension_array_equal(result, expected)
|
||||
|
||||
|
||||
@pytest.mark.xfail(reason="GH-28527")
|
||||
def test_add_strings(dtype):
|
||||
arr = pd.array(["a", "b", "c", "d"], dtype=dtype)
|
||||
df = pd.DataFrame([["t", "y", "v", "w"]], dtype=object)
|
||||
assert arr.__add__(df) is NotImplemented
|
||||
|
||||
result = arr + df
|
||||
expected = pd.DataFrame([["at", "by", "cv", "dw"]]).astype(dtype)
|
||||
tm.assert_frame_equal(result, expected)
|
||||
|
||||
result = df + arr
|
||||
expected = pd.DataFrame([["ta", "yb", "vc", "wd"]]).astype(dtype)
|
||||
tm.assert_frame_equal(result, expected)
|
||||
|
||||
|
||||
@pytest.mark.xfail(reason="GH-28527")
|
||||
def test_add_frame(dtype):
|
||||
arr = pd.array(["a", "b", np.nan, np.nan], dtype=dtype)
|
||||
df = pd.DataFrame([["x", np.nan, "y", np.nan]])
|
||||
|
||||
assert arr.__add__(df) is NotImplemented
|
||||
|
||||
result = arr + df
|
||||
expected = pd.DataFrame([["ax", np.nan, np.nan, np.nan]]).astype(dtype)
|
||||
tm.assert_frame_equal(result, expected)
|
||||
|
||||
result = df + arr
|
||||
expected = pd.DataFrame([["xa", np.nan, np.nan, np.nan]]).astype(dtype)
|
||||
tm.assert_frame_equal(result, expected)
|
||||
|
||||
|
||||
def test_comparison_methods_scalar(comparison_op, dtype):
|
||||
op_name = f"__{comparison_op.__name__}__"
|
||||
a = pd.array(["a", None, "c"], dtype=dtype)
|
||||
other = "a"
|
||||
result = getattr(a, op_name)(other)
|
||||
if dtype.storage == "pyarrow_numpy":
|
||||
expected = np.array([getattr(item, op_name)(other) for item in a])
|
||||
if comparison_op == operator.ne:
|
||||
expected[1] = True
|
||||
else:
|
||||
expected[1] = False
|
||||
tm.assert_numpy_array_equal(result, expected.astype(np.bool_))
|
||||
else:
|
||||
expected_dtype = "boolean[pyarrow]" if dtype.storage == "pyarrow" else "boolean"
|
||||
expected = np.array([getattr(item, op_name)(other) for item in a], dtype=object)
|
||||
expected = pd.array(expected, dtype=expected_dtype)
|
||||
tm.assert_extension_array_equal(result, expected)
|
||||
|
||||
|
||||
def test_comparison_methods_scalar_pd_na(comparison_op, dtype):
|
||||
op_name = f"__{comparison_op.__name__}__"
|
||||
a = pd.array(["a", None, "c"], dtype=dtype)
|
||||
result = getattr(a, op_name)(pd.NA)
|
||||
|
||||
if dtype.storage == "pyarrow_numpy":
|
||||
if operator.ne == comparison_op:
|
||||
expected = np.array([True, True, True])
|
||||
else:
|
||||
expected = np.array([False, False, False])
|
||||
tm.assert_numpy_array_equal(result, expected)
|
||||
else:
|
||||
expected_dtype = "boolean[pyarrow]" if dtype.storage == "pyarrow" else "boolean"
|
||||
expected = pd.array([None, None, None], dtype=expected_dtype)
|
||||
tm.assert_extension_array_equal(result, expected)
|
||||
tm.assert_extension_array_equal(result, expected)
|
||||
|
||||
|
||||
def test_comparison_methods_scalar_not_string(comparison_op, dtype):
|
||||
op_name = f"__{comparison_op.__name__}__"
|
||||
|
||||
a = pd.array(["a", None, "c"], dtype=dtype)
|
||||
other = 42
|
||||
|
||||
if op_name not in ["__eq__", "__ne__"]:
|
||||
with pytest.raises(TypeError, match="Invalid comparison|not supported between"):
|
||||
getattr(a, op_name)(other)
|
||||
|
||||
return
|
||||
|
||||
result = getattr(a, op_name)(other)
|
||||
|
||||
if dtype.storage == "pyarrow_numpy":
|
||||
expected_data = {
|
||||
"__eq__": [False, False, False],
|
||||
"__ne__": [True, True, True],
|
||||
}[op_name]
|
||||
expected = np.array(expected_data)
|
||||
tm.assert_numpy_array_equal(result, expected)
|
||||
else:
|
||||
expected_data = {"__eq__": [False, None, False], "__ne__": [True, None, True]}[
|
||||
op_name
|
||||
]
|
||||
expected_dtype = "boolean[pyarrow]" if dtype.storage == "pyarrow" else "boolean"
|
||||
expected = pd.array(expected_data, dtype=expected_dtype)
|
||||
tm.assert_extension_array_equal(result, expected)
|
||||
|
||||
|
||||
def test_comparison_methods_array(comparison_op, dtype):
|
||||
op_name = f"__{comparison_op.__name__}__"
|
||||
|
||||
a = pd.array(["a", None, "c"], dtype=dtype)
|
||||
other = [None, None, "c"]
|
||||
result = getattr(a, op_name)(other)
|
||||
if dtype.storage == "pyarrow_numpy":
|
||||
if operator.ne == comparison_op:
|
||||
expected = np.array([True, True, False])
|
||||
else:
|
||||
expected = np.array([False, False, False])
|
||||
expected[-1] = getattr(other[-1], op_name)(a[-1])
|
||||
tm.assert_numpy_array_equal(result, expected)
|
||||
|
||||
result = getattr(a, op_name)(pd.NA)
|
||||
if operator.ne == comparison_op:
|
||||
expected = np.array([True, True, True])
|
||||
else:
|
||||
expected = np.array([False, False, False])
|
||||
tm.assert_numpy_array_equal(result, expected)
|
||||
|
||||
else:
|
||||
expected_dtype = "boolean[pyarrow]" if dtype.storage == "pyarrow" else "boolean"
|
||||
expected = np.full(len(a), fill_value=None, dtype="object")
|
||||
expected[-1] = getattr(other[-1], op_name)(a[-1])
|
||||
expected = pd.array(expected, dtype=expected_dtype)
|
||||
tm.assert_extension_array_equal(result, expected)
|
||||
|
||||
result = getattr(a, op_name)(pd.NA)
|
||||
expected = pd.array([None, None, None], dtype=expected_dtype)
|
||||
tm.assert_extension_array_equal(result, expected)
|
||||
|
||||
|
||||
def test_constructor_raises(cls):
|
||||
if cls is pd.arrays.StringArray:
|
||||
msg = "StringArray requires a sequence of strings or pandas.NA"
|
||||
else:
|
||||
msg = "Unsupported type '<class 'numpy.ndarray'>' for ArrowExtensionArray"
|
||||
|
||||
with pytest.raises(ValueError, match=msg):
|
||||
cls(np.array(["a", "b"], dtype="S1"))
|
||||
|
||||
with pytest.raises(ValueError, match=msg):
|
||||
cls(np.array([]))
|
||||
|
||||
if cls is pd.arrays.StringArray:
|
||||
# GH#45057 np.nan and None do NOT raise, as they are considered valid NAs
|
||||
# for string dtype
|
||||
cls(np.array(["a", np.nan], dtype=object))
|
||||
cls(np.array(["a", None], dtype=object))
|
||||
else:
|
||||
with pytest.raises(ValueError, match=msg):
|
||||
cls(np.array(["a", np.nan], dtype=object))
|
||||
with pytest.raises(ValueError, match=msg):
|
||||
cls(np.array(["a", None], dtype=object))
|
||||
|
||||
with pytest.raises(ValueError, match=msg):
|
||||
cls(np.array(["a", pd.NaT], dtype=object))
|
||||
|
||||
with pytest.raises(ValueError, match=msg):
|
||||
cls(np.array(["a", np.datetime64("NaT", "ns")], dtype=object))
|
||||
|
||||
with pytest.raises(ValueError, match=msg):
|
||||
cls(np.array(["a", np.timedelta64("NaT", "ns")], dtype=object))
|
||||
|
||||
|
||||
@pytest.mark.parametrize("na", [np.nan, np.float64("nan"), float("nan"), None, pd.NA])
|
||||
def test_constructor_nan_like(na):
|
||||
expected = pd.arrays.StringArray(np.array(["a", pd.NA]))
|
||||
tm.assert_extension_array_equal(
|
||||
pd.arrays.StringArray(np.array(["a", na], dtype="object")), expected
|
||||
)
|
||||
|
||||
|
||||
@pytest.mark.parametrize("copy", [True, False])
|
||||
def test_from_sequence_no_mutate(copy, cls, dtype):
|
||||
nan_arr = np.array(["a", np.nan], dtype=object)
|
||||
expected_input = nan_arr.copy()
|
||||
na_arr = np.array(["a", pd.NA], dtype=object)
|
||||
|
||||
result = cls._from_sequence(nan_arr, dtype=dtype, copy=copy)
|
||||
|
||||
if cls in (ArrowStringArray, ArrowStringArrayNumpySemantics):
|
||||
import pyarrow as pa
|
||||
|
||||
expected = cls(pa.array(na_arr, type=pa.string(), from_pandas=True))
|
||||
else:
|
||||
expected = cls(na_arr)
|
||||
|
||||
tm.assert_extension_array_equal(result, expected)
|
||||
tm.assert_numpy_array_equal(nan_arr, expected_input)
|
||||
|
||||
|
||||
def test_astype_int(dtype):
|
||||
arr = pd.array(["1", "2", "3"], dtype=dtype)
|
||||
result = arr.astype("int64")
|
||||
expected = np.array([1, 2, 3], dtype="int64")
|
||||
tm.assert_numpy_array_equal(result, expected)
|
||||
|
||||
arr = pd.array(["1", pd.NA, "3"], dtype=dtype)
|
||||
if dtype.storage == "pyarrow_numpy":
|
||||
err = ValueError
|
||||
msg = "cannot convert float NaN to integer"
|
||||
else:
|
||||
err = TypeError
|
||||
msg = (
|
||||
r"int\(\) argument must be a string, a bytes-like "
|
||||
r"object or a( real)? number"
|
||||
)
|
||||
with pytest.raises(err, match=msg):
|
||||
arr.astype("int64")
|
||||
|
||||
|
||||
def test_astype_nullable_int(dtype):
|
||||
arr = pd.array(["1", pd.NA, "3"], dtype=dtype)
|
||||
|
||||
result = arr.astype("Int64")
|
||||
expected = pd.array([1, pd.NA, 3], dtype="Int64")
|
||||
tm.assert_extension_array_equal(result, expected)
|
||||
|
||||
|
||||
def test_astype_float(dtype, any_float_dtype):
|
||||
# Don't compare arrays (37974)
|
||||
ser = pd.Series(["1.1", pd.NA, "3.3"], dtype=dtype)
|
||||
result = ser.astype(any_float_dtype)
|
||||
expected = pd.Series([1.1, np.nan, 3.3], dtype=any_float_dtype)
|
||||
tm.assert_series_equal(result, expected)
|
||||
|
||||
|
||||
@pytest.mark.parametrize("skipna", [True, False])
|
||||
@pytest.mark.xfail(reason="Not implemented StringArray.sum")
|
||||
def test_reduce(skipna, dtype):
|
||||
arr = pd.Series(["a", "b", "c"], dtype=dtype)
|
||||
result = arr.sum(skipna=skipna)
|
||||
assert result == "abc"
|
||||
|
||||
|
||||
@pytest.mark.parametrize("skipna", [True, False])
|
||||
@pytest.mark.xfail(reason="Not implemented StringArray.sum")
|
||||
def test_reduce_missing(skipna, dtype):
|
||||
arr = pd.Series([None, "a", None, "b", "c", None], dtype=dtype)
|
||||
result = arr.sum(skipna=skipna)
|
||||
if skipna:
|
||||
assert result == "abc"
|
||||
else:
|
||||
assert pd.isna(result)
|
||||
|
||||
|
||||
@pytest.mark.parametrize("method", ["min", "max"])
|
||||
@pytest.mark.parametrize("skipna", [True, False])
|
||||
def test_min_max(method, skipna, dtype):
|
||||
arr = pd.Series(["a", "b", "c", None], dtype=dtype)
|
||||
result = getattr(arr, method)(skipna=skipna)
|
||||
if skipna:
|
||||
expected = "a" if method == "min" else "c"
|
||||
assert result == expected
|
||||
else:
|
||||
assert result is na_val(arr.dtype)
|
||||
|
||||
|
||||
@pytest.mark.parametrize("method", ["min", "max"])
|
||||
@pytest.mark.parametrize("box", [pd.Series, pd.array])
|
||||
def test_min_max_numpy(method, box, dtype, request, arrow_string_storage):
|
||||
if dtype.storage in arrow_string_storage and box is pd.array:
|
||||
if box is pd.array:
|
||||
reason = "'<=' not supported between instances of 'str' and 'NoneType'"
|
||||
else:
|
||||
reason = "'ArrowStringArray' object has no attribute 'max'"
|
||||
mark = pytest.mark.xfail(raises=TypeError, reason=reason)
|
||||
request.applymarker(mark)
|
||||
|
||||
arr = box(["a", "b", "c", None], dtype=dtype)
|
||||
result = getattr(np, method)(arr)
|
||||
expected = "a" if method == "min" else "c"
|
||||
assert result == expected
|
||||
|
||||
|
||||
def test_fillna_args(dtype, arrow_string_storage):
|
||||
# GH 37987
|
||||
|
||||
arr = pd.array(["a", pd.NA], dtype=dtype)
|
||||
|
||||
res = arr.fillna(value="b")
|
||||
expected = pd.array(["a", "b"], dtype=dtype)
|
||||
tm.assert_extension_array_equal(res, expected)
|
||||
|
||||
res = arr.fillna(value=np.str_("b"))
|
||||
expected = pd.array(["a", "b"], dtype=dtype)
|
||||
tm.assert_extension_array_equal(res, expected)
|
||||
|
||||
if dtype.storage in arrow_string_storage:
|
||||
msg = "Invalid value '1' for dtype string"
|
||||
else:
|
||||
msg = "Cannot set non-string value '1' into a StringArray."
|
||||
with pytest.raises(TypeError, match=msg):
|
||||
arr.fillna(value=1)
|
||||
|
||||
|
||||
def test_arrow_array(dtype):
|
||||
# protocol added in 0.15.0
|
||||
pa = pytest.importorskip("pyarrow")
|
||||
import pyarrow.compute as pc
|
||||
|
||||
data = pd.array(["a", "b", "c"], dtype=dtype)
|
||||
arr = pa.array(data)
|
||||
expected = pa.array(list(data), type=pa.large_string(), from_pandas=True)
|
||||
if dtype.storage in ("pyarrow", "pyarrow_numpy") and pa_version_under12p0:
|
||||
expected = pa.chunked_array(expected)
|
||||
if dtype.storage == "python":
|
||||
expected = pc.cast(expected, pa.string())
|
||||
assert arr.equals(expected)
|
||||
|
||||
|
||||
@pytest.mark.filterwarnings("ignore:Passing a BlockManager:DeprecationWarning")
|
||||
def test_arrow_roundtrip(dtype, string_storage2, request, using_infer_string):
|
||||
# roundtrip possible from arrow 1.0.0
|
||||
pa = pytest.importorskip("pyarrow")
|
||||
|
||||
if using_infer_string and string_storage2 != "pyarrow_numpy":
|
||||
request.applymarker(
|
||||
pytest.mark.xfail(
|
||||
reason="infer_string takes precedence over string storage"
|
||||
)
|
||||
)
|
||||
|
||||
data = pd.array(["a", "b", None], dtype=dtype)
|
||||
df = pd.DataFrame({"a": data})
|
||||
table = pa.table(df)
|
||||
if dtype.storage == "python":
|
||||
assert table.field("a").type == "string"
|
||||
else:
|
||||
assert table.field("a").type == "large_string"
|
||||
with pd.option_context("string_storage", string_storage2):
|
||||
result = table.to_pandas()
|
||||
assert isinstance(result["a"].dtype, pd.StringDtype)
|
||||
expected = df.astype(f"string[{string_storage2}]")
|
||||
tm.assert_frame_equal(result, expected)
|
||||
# ensure the missing value is represented by NA and not np.nan or None
|
||||
assert result.loc[2, "a"] is na_val(result["a"].dtype)
|
||||
|
||||
|
||||
@pytest.mark.filterwarnings("ignore:Passing a BlockManager:DeprecationWarning")
|
||||
def test_arrow_load_from_zero_chunks(
|
||||
dtype, string_storage2, request, using_infer_string
|
||||
):
|
||||
# GH-41040
|
||||
pa = pytest.importorskip("pyarrow")
|
||||
|
||||
if using_infer_string and string_storage2 != "pyarrow_numpy":
|
||||
request.applymarker(
|
||||
pytest.mark.xfail(
|
||||
reason="infer_string takes precedence over string storage"
|
||||
)
|
||||
)
|
||||
|
||||
data = pd.array([], dtype=dtype)
|
||||
df = pd.DataFrame({"a": data})
|
||||
table = pa.table(df)
|
||||
if dtype.storage == "python":
|
||||
assert table.field("a").type == "string"
|
||||
else:
|
||||
assert table.field("a").type == "large_string"
|
||||
# Instantiate the same table with no chunks at all
|
||||
table = pa.table([pa.chunked_array([], type=pa.string())], schema=table.schema)
|
||||
with pd.option_context("string_storage", string_storage2):
|
||||
result = table.to_pandas()
|
||||
assert isinstance(result["a"].dtype, pd.StringDtype)
|
||||
expected = df.astype(f"string[{string_storage2}]")
|
||||
tm.assert_frame_equal(result, expected)
|
||||
|
||||
|
||||
def test_value_counts_na(dtype):
|
||||
if getattr(dtype, "storage", "") == "pyarrow":
|
||||
exp_dtype = "int64[pyarrow]"
|
||||
elif getattr(dtype, "storage", "") == "pyarrow_numpy":
|
||||
exp_dtype = "int64"
|
||||
else:
|
||||
exp_dtype = "Int64"
|
||||
arr = pd.array(["a", "b", "a", pd.NA], dtype=dtype)
|
||||
result = arr.value_counts(dropna=False)
|
||||
expected = pd.Series([2, 1, 1], index=arr[[0, 1, 3]], dtype=exp_dtype, name="count")
|
||||
tm.assert_series_equal(result, expected)
|
||||
|
||||
result = arr.value_counts(dropna=True)
|
||||
expected = pd.Series([2, 1], index=arr[:2], dtype=exp_dtype, name="count")
|
||||
tm.assert_series_equal(result, expected)
|
||||
|
||||
|
||||
def test_value_counts_with_normalize(dtype):
|
||||
if getattr(dtype, "storage", "") == "pyarrow":
|
||||
exp_dtype = "double[pyarrow]"
|
||||
elif getattr(dtype, "storage", "") == "pyarrow_numpy":
|
||||
exp_dtype = np.float64
|
||||
else:
|
||||
exp_dtype = "Float64"
|
||||
ser = pd.Series(["a", "b", "a", pd.NA], dtype=dtype)
|
||||
result = ser.value_counts(normalize=True)
|
||||
expected = pd.Series([2, 1], index=ser[:2], dtype=exp_dtype, name="proportion") / 3
|
||||
tm.assert_series_equal(result, expected)
|
||||
|
||||
|
||||
@pytest.mark.parametrize(
|
||||
"values, expected",
|
||||
[
|
||||
(["a", "b", "c"], np.array([False, False, False])),
|
||||
(["a", "b", None], np.array([False, False, True])),
|
||||
],
|
||||
)
|
||||
def test_use_inf_as_na(values, expected, dtype):
|
||||
# https://github.com/pandas-dev/pandas/issues/33655
|
||||
values = pd.array(values, dtype=dtype)
|
||||
msg = "use_inf_as_na option is deprecated"
|
||||
with tm.assert_produces_warning(FutureWarning, match=msg):
|
||||
with pd.option_context("mode.use_inf_as_na", True):
|
||||
result = values.isna()
|
||||
tm.assert_numpy_array_equal(result, expected)
|
||||
|
||||
result = pd.Series(values).isna()
|
||||
expected = pd.Series(expected)
|
||||
tm.assert_series_equal(result, expected)
|
||||
|
||||
result = pd.DataFrame(values).isna()
|
||||
expected = pd.DataFrame(expected)
|
||||
tm.assert_frame_equal(result, expected)
|
||||
|
||||
|
||||
def test_memory_usage(dtype, arrow_string_storage):
|
||||
# GH 33963
|
||||
|
||||
if dtype.storage in arrow_string_storage:
|
||||
pytest.skip(f"not applicable for {dtype.storage}")
|
||||
|
||||
series = pd.Series(["a", "b", "c"], dtype=dtype)
|
||||
|
||||
assert 0 < series.nbytes <= series.memory_usage() < series.memory_usage(deep=True)
|
||||
|
||||
|
||||
@pytest.mark.parametrize("float_dtype", [np.float16, np.float32, np.float64])
|
||||
def test_astype_from_float_dtype(float_dtype, dtype):
|
||||
# https://github.com/pandas-dev/pandas/issues/36451
|
||||
ser = pd.Series([0.1], dtype=float_dtype)
|
||||
result = ser.astype(dtype)
|
||||
expected = pd.Series(["0.1"], dtype=dtype)
|
||||
tm.assert_series_equal(result, expected)
|
||||
|
||||
|
||||
def test_to_numpy_returns_pdna_default(dtype):
|
||||
arr = pd.array(["a", pd.NA, "b"], dtype=dtype)
|
||||
result = np.array(arr)
|
||||
expected = np.array(["a", na_val(dtype), "b"], dtype=object)
|
||||
tm.assert_numpy_array_equal(result, expected)
|
||||
|
||||
|
||||
def test_to_numpy_na_value(dtype, nulls_fixture):
|
||||
na_value = nulls_fixture
|
||||
arr = pd.array(["a", pd.NA, "b"], dtype=dtype)
|
||||
result = arr.to_numpy(na_value=na_value)
|
||||
expected = np.array(["a", na_value, "b"], dtype=object)
|
||||
tm.assert_numpy_array_equal(result, expected)
|
||||
|
||||
|
||||
def test_isin(dtype, fixed_now_ts):
|
||||
s = pd.Series(["a", "b", None], dtype=dtype)
|
||||
|
||||
result = s.isin(["a", "c"])
|
||||
expected = pd.Series([True, False, False])
|
||||
tm.assert_series_equal(result, expected)
|
||||
|
||||
result = s.isin(["a", pd.NA])
|
||||
expected = pd.Series([True, False, True])
|
||||
tm.assert_series_equal(result, expected)
|
||||
|
||||
result = s.isin([])
|
||||
expected = pd.Series([False, False, False])
|
||||
tm.assert_series_equal(result, expected)
|
||||
|
||||
result = s.isin(["a", fixed_now_ts])
|
||||
expected = pd.Series([True, False, False])
|
||||
tm.assert_series_equal(result, expected)
|
||||
|
||||
|
||||
def test_setitem_scalar_with_mask_validation(dtype):
|
||||
# https://github.com/pandas-dev/pandas/issues/47628
|
||||
# setting None with a boolean mask (through _putmaks) should still result
|
||||
# in pd.NA values in the underlying array
|
||||
ser = pd.Series(["a", "b", "c"], dtype=dtype)
|
||||
mask = np.array([False, True, False])
|
||||
|
||||
ser[mask] = None
|
||||
assert ser.array[1] is na_val(ser.dtype)
|
||||
|
||||
# for other non-string we should also raise an error
|
||||
ser = pd.Series(["a", "b", "c"], dtype=dtype)
|
||||
if type(ser.array) is pd.arrays.StringArray:
|
||||
msg = "Cannot set non-string value"
|
||||
else:
|
||||
msg = "Scalar must be NA or str"
|
||||
with pytest.raises(TypeError, match=msg):
|
||||
ser[mask] = 1
|
||||
|
||||
|
||||
def test_from_numpy_str(dtype):
|
||||
vals = ["a", "b", "c"]
|
||||
arr = np.array(vals, dtype=np.str_)
|
||||
result = pd.array(arr, dtype=dtype)
|
||||
expected = pd.array(vals, dtype=dtype)
|
||||
tm.assert_extension_array_equal(result, expected)
|
||||
|
||||
|
||||
def test_tolist(dtype):
|
||||
vals = ["a", "b", "c"]
|
||||
arr = pd.array(vals, dtype=dtype)
|
||||
result = arr.tolist()
|
||||
expected = vals
|
||||
tm.assert_equal(result, expected)
|
||||
@ -0,0 +1,265 @@
|
||||
import pickle
|
||||
import re
|
||||
|
||||
import numpy as np
|
||||
import pytest
|
||||
|
||||
import pandas.util._test_decorators as td
|
||||
|
||||
import pandas as pd
|
||||
import pandas._testing as tm
|
||||
from pandas.core.arrays.string_ import (
|
||||
StringArray,
|
||||
StringDtype,
|
||||
)
|
||||
from pandas.core.arrays.string_arrow import (
|
||||
ArrowStringArray,
|
||||
ArrowStringArrayNumpySemantics,
|
||||
)
|
||||
|
||||
|
||||
def test_eq_all_na():
|
||||
pytest.importorskip("pyarrow")
|
||||
a = pd.array([pd.NA, pd.NA], dtype=StringDtype("pyarrow"))
|
||||
result = a == a
|
||||
expected = pd.array([pd.NA, pd.NA], dtype="boolean[pyarrow]")
|
||||
tm.assert_extension_array_equal(result, expected)
|
||||
|
||||
|
||||
def test_config(string_storage, request, using_infer_string):
|
||||
if using_infer_string and string_storage != "pyarrow_numpy":
|
||||
request.applymarker(pytest.mark.xfail(reason="infer string takes precedence"))
|
||||
with pd.option_context("string_storage", string_storage):
|
||||
assert StringDtype().storage == string_storage
|
||||
result = pd.array(["a", "b"])
|
||||
assert result.dtype.storage == string_storage
|
||||
|
||||
dtype = StringDtype(string_storage)
|
||||
expected = dtype.construct_array_type()._from_sequence(["a", "b"], dtype=dtype)
|
||||
tm.assert_equal(result, expected)
|
||||
|
||||
|
||||
def test_config_bad_storage_raises():
|
||||
msg = re.escape("Value must be one of python|pyarrow")
|
||||
with pytest.raises(ValueError, match=msg):
|
||||
pd.options.mode.string_storage = "foo"
|
||||
|
||||
|
||||
@pytest.mark.parametrize("chunked", [True, False])
|
||||
@pytest.mark.parametrize("array", ["numpy", "pyarrow"])
|
||||
def test_constructor_not_string_type_raises(array, chunked, arrow_string_storage):
|
||||
pa = pytest.importorskip("pyarrow")
|
||||
|
||||
array = pa if array in arrow_string_storage else np
|
||||
|
||||
arr = array.array([1, 2, 3])
|
||||
if chunked:
|
||||
if array is np:
|
||||
pytest.skip("chunked not applicable to numpy array")
|
||||
arr = pa.chunked_array(arr)
|
||||
if array is np:
|
||||
msg = "Unsupported type '<class 'numpy.ndarray'>' for ArrowExtensionArray"
|
||||
else:
|
||||
msg = re.escape(
|
||||
"ArrowStringArray requires a PyArrow (chunked) array of large_string type"
|
||||
)
|
||||
with pytest.raises(ValueError, match=msg):
|
||||
ArrowStringArray(arr)
|
||||
|
||||
|
||||
@pytest.mark.parametrize("chunked", [True, False])
|
||||
def test_constructor_not_string_type_value_dictionary_raises(chunked):
|
||||
pa = pytest.importorskip("pyarrow")
|
||||
|
||||
arr = pa.array([1, 2, 3], pa.dictionary(pa.int32(), pa.int32()))
|
||||
if chunked:
|
||||
arr = pa.chunked_array(arr)
|
||||
|
||||
msg = re.escape(
|
||||
"ArrowStringArray requires a PyArrow (chunked) array of large_string type"
|
||||
)
|
||||
with pytest.raises(ValueError, match=msg):
|
||||
ArrowStringArray(arr)
|
||||
|
||||
|
||||
@pytest.mark.xfail(
|
||||
reason="dict conversion does not seem to be implemented for large string in arrow"
|
||||
)
|
||||
@pytest.mark.parametrize("chunked", [True, False])
|
||||
def test_constructor_valid_string_type_value_dictionary(chunked):
|
||||
pa = pytest.importorskip("pyarrow")
|
||||
|
||||
arr = pa.array(["1", "2", "3"], pa.large_string()).dictionary_encode()
|
||||
if chunked:
|
||||
arr = pa.chunked_array(arr)
|
||||
|
||||
arr = ArrowStringArray(arr)
|
||||
assert pa.types.is_string(arr._pa_array.type.value_type)
|
||||
|
||||
|
||||
def test_constructor_from_list():
|
||||
# GH#27673
|
||||
pytest.importorskip("pyarrow")
|
||||
result = pd.Series(["E"], dtype=StringDtype(storage="pyarrow"))
|
||||
assert isinstance(result.dtype, StringDtype)
|
||||
assert result.dtype.storage == "pyarrow"
|
||||
|
||||
|
||||
def test_from_sequence_wrong_dtype_raises(using_infer_string):
|
||||
pytest.importorskip("pyarrow")
|
||||
with pd.option_context("string_storage", "python"):
|
||||
ArrowStringArray._from_sequence(["a", None, "c"], dtype="string")
|
||||
|
||||
with pd.option_context("string_storage", "pyarrow"):
|
||||
ArrowStringArray._from_sequence(["a", None, "c"], dtype="string")
|
||||
|
||||
with pytest.raises(AssertionError, match=None):
|
||||
ArrowStringArray._from_sequence(["a", None, "c"], dtype="string[python]")
|
||||
|
||||
ArrowStringArray._from_sequence(["a", None, "c"], dtype="string[pyarrow]")
|
||||
|
||||
if not using_infer_string:
|
||||
with pytest.raises(AssertionError, match=None):
|
||||
with pd.option_context("string_storage", "python"):
|
||||
ArrowStringArray._from_sequence(["a", None, "c"], dtype=StringDtype())
|
||||
|
||||
with pd.option_context("string_storage", "pyarrow"):
|
||||
ArrowStringArray._from_sequence(["a", None, "c"], dtype=StringDtype())
|
||||
|
||||
if not using_infer_string:
|
||||
with pytest.raises(AssertionError, match=None):
|
||||
ArrowStringArray._from_sequence(
|
||||
["a", None, "c"], dtype=StringDtype("python")
|
||||
)
|
||||
|
||||
ArrowStringArray._from_sequence(["a", None, "c"], dtype=StringDtype("pyarrow"))
|
||||
|
||||
with pd.option_context("string_storage", "python"):
|
||||
StringArray._from_sequence(["a", None, "c"], dtype="string")
|
||||
|
||||
with pd.option_context("string_storage", "pyarrow"):
|
||||
StringArray._from_sequence(["a", None, "c"], dtype="string")
|
||||
|
||||
StringArray._from_sequence(["a", None, "c"], dtype="string[python]")
|
||||
|
||||
with pytest.raises(AssertionError, match=None):
|
||||
StringArray._from_sequence(["a", None, "c"], dtype="string[pyarrow]")
|
||||
|
||||
if not using_infer_string:
|
||||
with pd.option_context("string_storage", "python"):
|
||||
StringArray._from_sequence(["a", None, "c"], dtype=StringDtype())
|
||||
|
||||
if not using_infer_string:
|
||||
with pytest.raises(AssertionError, match=None):
|
||||
with pd.option_context("string_storage", "pyarrow"):
|
||||
StringArray._from_sequence(["a", None, "c"], dtype=StringDtype())
|
||||
|
||||
StringArray._from_sequence(["a", None, "c"], dtype=StringDtype("python"))
|
||||
|
||||
with pytest.raises(AssertionError, match=None):
|
||||
StringArray._from_sequence(["a", None, "c"], dtype=StringDtype("pyarrow"))
|
||||
|
||||
|
||||
@td.skip_if_installed("pyarrow")
|
||||
def test_pyarrow_not_installed_raises():
|
||||
msg = re.escape("pyarrow>=10.0.1 is required for PyArrow backed")
|
||||
|
||||
with pytest.raises(ImportError, match=msg):
|
||||
StringDtype(storage="pyarrow")
|
||||
|
||||
with pytest.raises(ImportError, match=msg):
|
||||
ArrowStringArray([])
|
||||
|
||||
with pytest.raises(ImportError, match=msg):
|
||||
ArrowStringArrayNumpySemantics([])
|
||||
|
||||
with pytest.raises(ImportError, match=msg):
|
||||
ArrowStringArray._from_sequence(["a", None, "b"])
|
||||
|
||||
|
||||
@pytest.mark.parametrize("multiple_chunks", [False, True])
|
||||
@pytest.mark.parametrize(
|
||||
"key, value, expected",
|
||||
[
|
||||
(-1, "XX", ["a", "b", "c", "d", "XX"]),
|
||||
(1, "XX", ["a", "XX", "c", "d", "e"]),
|
||||
(1, None, ["a", None, "c", "d", "e"]),
|
||||
(1, pd.NA, ["a", None, "c", "d", "e"]),
|
||||
([1, 3], "XX", ["a", "XX", "c", "XX", "e"]),
|
||||
([1, 3], ["XX", "YY"], ["a", "XX", "c", "YY", "e"]),
|
||||
([1, 3], ["XX", None], ["a", "XX", "c", None, "e"]),
|
||||
([1, 3], ["XX", pd.NA], ["a", "XX", "c", None, "e"]),
|
||||
([0, -1], ["XX", "YY"], ["XX", "b", "c", "d", "YY"]),
|
||||
([-1, 0], ["XX", "YY"], ["YY", "b", "c", "d", "XX"]),
|
||||
(slice(3, None), "XX", ["a", "b", "c", "XX", "XX"]),
|
||||
(slice(2, 4), ["XX", "YY"], ["a", "b", "XX", "YY", "e"]),
|
||||
(slice(3, 1, -1), ["XX", "YY"], ["a", "b", "YY", "XX", "e"]),
|
||||
(slice(None), "XX", ["XX", "XX", "XX", "XX", "XX"]),
|
||||
([False, True, False, True, False], ["XX", "YY"], ["a", "XX", "c", "YY", "e"]),
|
||||
],
|
||||
)
|
||||
def test_setitem(multiple_chunks, key, value, expected):
|
||||
pa = pytest.importorskip("pyarrow")
|
||||
|
||||
result = pa.array(list("abcde"))
|
||||
expected = pa.array(expected)
|
||||
|
||||
if multiple_chunks:
|
||||
result = pa.chunked_array([result[:3], result[3:]])
|
||||
expected = pa.chunked_array([expected[:3], expected[3:]])
|
||||
|
||||
result = ArrowStringArray(result)
|
||||
expected = ArrowStringArray(expected)
|
||||
|
||||
result[key] = value
|
||||
tm.assert_equal(result, expected)
|
||||
|
||||
|
||||
def test_setitem_invalid_indexer_raises():
|
||||
pa = pytest.importorskip("pyarrow")
|
||||
|
||||
arr = ArrowStringArray(pa.array(list("abcde")))
|
||||
|
||||
with pytest.raises(IndexError, match=None):
|
||||
arr[5] = "foo"
|
||||
|
||||
with pytest.raises(IndexError, match=None):
|
||||
arr[-6] = "foo"
|
||||
|
||||
with pytest.raises(IndexError, match=None):
|
||||
arr[[0, 5]] = "foo"
|
||||
|
||||
with pytest.raises(IndexError, match=None):
|
||||
arr[[0, -6]] = "foo"
|
||||
|
||||
with pytest.raises(IndexError, match=None):
|
||||
arr[[True, True, False]] = "foo"
|
||||
|
||||
with pytest.raises(ValueError, match=None):
|
||||
arr[[0, 1]] = ["foo", "bar", "baz"]
|
||||
|
||||
|
||||
@pytest.mark.parametrize("dtype", ["string[pyarrow]", "string[pyarrow_numpy]"])
|
||||
def test_pickle_roundtrip(dtype):
|
||||
# GH 42600
|
||||
pytest.importorskip("pyarrow")
|
||||
expected = pd.Series(range(10), dtype=dtype)
|
||||
expected_sliced = expected.head(2)
|
||||
full_pickled = pickle.dumps(expected)
|
||||
sliced_pickled = pickle.dumps(expected_sliced)
|
||||
|
||||
assert len(full_pickled) > len(sliced_pickled)
|
||||
|
||||
result = pickle.loads(full_pickled)
|
||||
tm.assert_series_equal(result, expected)
|
||||
|
||||
result_sliced = pickle.loads(sliced_pickled)
|
||||
tm.assert_series_equal(result_sliced, expected_sliced)
|
||||
|
||||
|
||||
def test_string_dtype_error_message():
|
||||
# GH#55051
|
||||
pytest.importorskip("pyarrow")
|
||||
msg = "Storage must be 'python', 'pyarrow' or 'pyarrow_numpy'."
|
||||
with pytest.raises(ValueError, match=msg):
|
||||
StringDtype("bla")
|
||||
Reference in New Issue
Block a user