projektAI/venv/Lib/site-packages/pandas/tests/indexing/test_coercion.py

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2021-06-06 22:13:05 +02:00
from datetime import timedelta
import itertools
from typing import Dict, List
import numpy as np
import pytest
from pandas.compat import IS64, is_platform_windows
import pandas as pd
import pandas._testing as tm
###############################################################
# Index / Series common tests which may trigger dtype coercions
###############################################################
@pytest.fixture(autouse=True, scope="class")
def check_comprehensiveness(request):
# Iterate over combination of dtype, method and klass
# and ensure that each are contained within a collected test
cls = request.cls
combos = itertools.product(cls.klasses, cls.dtypes, [cls.method])
def has_test(combo):
klass, dtype, method = combo
cls_funcs = request.node.session.items
return any(
klass in x.name and dtype in x.name and method in x.name for x in cls_funcs
)
opts = request.config.option
if opts.lf or opts.keyword:
# If we are running with "last-failed" or -k foo, we expect to only
# run a subset of tests.
yield
else:
for combo in combos:
if not has_test(combo):
raise AssertionError(
f"test method is not defined: {cls.__name__}, {combo}"
)
yield
class CoercionBase:
klasses = ["index", "series"]
dtypes = [
"object",
"int64",
"float64",
"complex128",
"bool",
"datetime64",
"datetime64tz",
"timedelta64",
"period",
]
@property
def method(self):
raise NotImplementedError(self)
def _assert(self, left, right, dtype):
# explicitly check dtype to avoid any unexpected result
if isinstance(left, pd.Series):
tm.assert_series_equal(left, right)
elif isinstance(left, pd.Index):
tm.assert_index_equal(left, right)
else:
raise NotImplementedError
assert left.dtype == dtype
assert right.dtype == dtype
class TestSetitemCoercion(CoercionBase):
method = "setitem"
def _assert_setitem_series_conversion(
self, original_series, loc_value, expected_series, expected_dtype
):
""" test series value's coercion triggered by assignment """
temp = original_series.copy()
temp[1] = loc_value
tm.assert_series_equal(temp, expected_series)
# check dtype explicitly for sure
assert temp.dtype == expected_dtype
# .loc works different rule, temporary disable
# temp = original_series.copy()
# temp.loc[1] = loc_value
# tm.assert_series_equal(temp, expected_series)
@pytest.mark.parametrize(
"val,exp_dtype", [(1, object), (1.1, object), (1 + 1j, object), (True, object)]
)
def test_setitem_series_object(self, val, exp_dtype):
obj = pd.Series(list("abcd"))
assert obj.dtype == object
exp = pd.Series(["a", val, "c", "d"])
self._assert_setitem_series_conversion(obj, val, exp, exp_dtype)
@pytest.mark.parametrize(
"val,exp_dtype",
[(1, np.int64), (1.1, np.float64), (1 + 1j, np.complex128), (True, object)],
)
def test_setitem_series_int64(self, val, exp_dtype, request):
obj = pd.Series([1, 2, 3, 4])
assert obj.dtype == np.int64
if exp_dtype is np.float64:
exp = pd.Series([1, 1, 3, 4])
self._assert_setitem_series_conversion(obj, 1.1, exp, np.int64)
mark = pytest.mark.xfail(reason="GH12747 The result must be float")
request.node.add_marker(mark)
exp = pd.Series([1, val, 3, 4])
self._assert_setitem_series_conversion(obj, val, exp, exp_dtype)
@pytest.mark.parametrize(
"val,exp_dtype", [(np.int32(1), np.int8), (np.int16(2 ** 9), np.int16)]
)
def test_setitem_series_int8(self, val, exp_dtype, request):
obj = pd.Series([1, 2, 3, 4], dtype=np.int8)
assert obj.dtype == np.int8
if exp_dtype is np.int16:
exp = pd.Series([1, 0, 3, 4], dtype=np.int8)
self._assert_setitem_series_conversion(obj, val, exp, np.int8)
mark = pytest.mark.xfail(
reason="BUG: it must be pd.Series([1, 1, 3, 4], dtype=np.int16"
)
request.node.add_marker(mark)
exp = pd.Series([1, val, 3, 4], dtype=np.int8)
self._assert_setitem_series_conversion(obj, val, exp, exp_dtype)
@pytest.mark.parametrize(
"val,exp_dtype",
[(1, np.float64), (1.1, np.float64), (1 + 1j, np.complex128), (True, object)],
)
def test_setitem_series_float64(self, val, exp_dtype):
obj = pd.Series([1.1, 2.2, 3.3, 4.4])
assert obj.dtype == np.float64
exp = pd.Series([1.1, val, 3.3, 4.4])
self._assert_setitem_series_conversion(obj, val, exp, exp_dtype)
@pytest.mark.parametrize(
"val,exp_dtype",
[
(1, np.complex128),
(1.1, np.complex128),
(1 + 1j, np.complex128),
(True, object),
],
)
def test_setitem_series_complex128(self, val, exp_dtype):
obj = pd.Series([1 + 1j, 2 + 2j, 3 + 3j, 4 + 4j])
assert obj.dtype == np.complex128
exp = pd.Series([1 + 1j, val, 3 + 3j, 4 + 4j])
self._assert_setitem_series_conversion(obj, val, exp, exp_dtype)
@pytest.mark.parametrize(
"val,exp_dtype",
[
(1, np.int64),
(3, np.int64),
(1.1, np.float64),
(1 + 1j, np.complex128),
(True, np.bool_),
],
)
def test_setitem_series_bool(self, val, exp_dtype, request):
obj = pd.Series([True, False, True, False])
assert obj.dtype == np.bool_
mark = None
if exp_dtype is np.int64:
exp = pd.Series([True, True, True, False])
self._assert_setitem_series_conversion(obj, val, exp, np.bool_)
mark = pytest.mark.xfail(reason="TODO_GH12747 The result must be int")
elif exp_dtype is np.float64:
exp = pd.Series([True, True, True, False])
self._assert_setitem_series_conversion(obj, val, exp, np.bool_)
mark = pytest.mark.xfail(reason="TODO_GH12747 The result must be float")
elif exp_dtype is np.complex128:
exp = pd.Series([True, True, True, False])
self._assert_setitem_series_conversion(obj, val, exp, np.bool_)
mark = pytest.mark.xfail(reason="TODO_GH12747 The result must be complex")
if mark is not None:
request.node.add_marker(mark)
exp = pd.Series([True, val, True, False])
self._assert_setitem_series_conversion(obj, val, exp, exp_dtype)
@pytest.mark.parametrize(
"val,exp_dtype",
[(pd.Timestamp("2012-01-01"), "datetime64[ns]"), (1, object), ("x", object)],
)
def test_setitem_series_datetime64(self, val, exp_dtype):
obj = pd.Series(
[
pd.Timestamp("2011-01-01"),
pd.Timestamp("2011-01-02"),
pd.Timestamp("2011-01-03"),
pd.Timestamp("2011-01-04"),
]
)
assert obj.dtype == "datetime64[ns]"
exp = pd.Series(
[
pd.Timestamp("2011-01-01"),
val,
pd.Timestamp("2011-01-03"),
pd.Timestamp("2011-01-04"),
]
)
self._assert_setitem_series_conversion(obj, val, exp, exp_dtype)
@pytest.mark.parametrize(
"val,exp_dtype",
[
(pd.Timestamp("2012-01-01", tz="US/Eastern"), "datetime64[ns, US/Eastern]"),
(pd.Timestamp("2012-01-01", tz="US/Pacific"), object),
(pd.Timestamp("2012-01-01"), object),
(1, object),
],
)
def test_setitem_series_datetime64tz(self, val, exp_dtype):
tz = "US/Eastern"
obj = pd.Series(
[
pd.Timestamp("2011-01-01", tz=tz),
pd.Timestamp("2011-01-02", tz=tz),
pd.Timestamp("2011-01-03", tz=tz),
pd.Timestamp("2011-01-04", tz=tz),
]
)
assert obj.dtype == "datetime64[ns, US/Eastern]"
exp = pd.Series(
[
pd.Timestamp("2011-01-01", tz=tz),
val,
pd.Timestamp("2011-01-03", tz=tz),
pd.Timestamp("2011-01-04", tz=tz),
]
)
self._assert_setitem_series_conversion(obj, val, exp, exp_dtype)
@pytest.mark.parametrize(
"val,exp_dtype",
[(pd.Timedelta("12 day"), "timedelta64[ns]"), (1, object), ("x", object)],
)
def test_setitem_series_timedelta64(self, val, exp_dtype):
obj = pd.Series(
[
pd.Timedelta("1 day"),
pd.Timedelta("2 day"),
pd.Timedelta("3 day"),
pd.Timedelta("4 day"),
]
)
assert obj.dtype == "timedelta64[ns]"
exp = pd.Series(
[pd.Timedelta("1 day"), val, pd.Timedelta("3 day"), pd.Timedelta("4 day")]
)
self._assert_setitem_series_conversion(obj, val, exp, exp_dtype)
def _assert_setitem_index_conversion(
self, original_series, loc_key, expected_index, expected_dtype
):
""" test index's coercion triggered by assign key """
temp = original_series.copy()
temp[loc_key] = 5
exp = pd.Series([1, 2, 3, 4, 5], index=expected_index)
tm.assert_series_equal(temp, exp)
# check dtype explicitly for sure
assert temp.index.dtype == expected_dtype
temp = original_series.copy()
temp.loc[loc_key] = 5
exp = pd.Series([1, 2, 3, 4, 5], index=expected_index)
tm.assert_series_equal(temp, exp)
# check dtype explicitly for sure
assert temp.index.dtype == expected_dtype
@pytest.mark.parametrize(
"val,exp_dtype", [("x", object), (5, IndexError), (1.1, object)]
)
def test_setitem_index_object(self, val, exp_dtype):
obj = pd.Series([1, 2, 3, 4], index=list("abcd"))
assert obj.index.dtype == object
if exp_dtype is IndexError:
temp = obj.copy()
msg = "index 5 is out of bounds for axis 0 with size 4"
with pytest.raises(exp_dtype, match=msg):
temp[5] = 5
else:
exp_index = pd.Index(list("abcd") + [val])
self._assert_setitem_index_conversion(obj, val, exp_index, exp_dtype)
@pytest.mark.parametrize(
"val,exp_dtype", [(5, np.int64), (1.1, np.float64), ("x", object)]
)
def test_setitem_index_int64(self, val, exp_dtype):
obj = pd.Series([1, 2, 3, 4])
assert obj.index.dtype == np.int64
exp_index = pd.Index([0, 1, 2, 3, val])
self._assert_setitem_index_conversion(obj, val, exp_index, exp_dtype)
@pytest.mark.parametrize(
"val,exp_dtype", [(5, IndexError), (5.1, np.float64), ("x", object)]
)
def test_setitem_index_float64(self, val, exp_dtype, request):
obj = pd.Series([1, 2, 3, 4], index=[1.1, 2.1, 3.1, 4.1])
assert obj.index.dtype == np.float64
if exp_dtype is IndexError:
# float + int -> int
temp = obj.copy()
with pytest.raises(exp_dtype):
temp[5] = 5
mark = pytest.mark.xfail(reason="TODO_GH12747 The result must be float")
request.node.add_marker(mark)
exp_index = pd.Index([1.1, 2.1, 3.1, 4.1, val])
self._assert_setitem_index_conversion(obj, val, exp_index, exp_dtype)
def test_setitem_series_period(self):
pytest.xfail("Test not implemented")
def test_setitem_index_complex128(self):
pytest.xfail("Test not implemented")
def test_setitem_index_bool(self):
pytest.xfail("Test not implemented")
def test_setitem_index_datetime64(self):
pytest.xfail("Test not implemented")
def test_setitem_index_datetime64tz(self):
pytest.xfail("Test not implemented")
def test_setitem_index_timedelta64(self):
pytest.xfail("Test not implemented")
def test_setitem_index_period(self):
pytest.xfail("Test not implemented")
class TestInsertIndexCoercion(CoercionBase):
klasses = ["index"]
method = "insert"
def _assert_insert_conversion(self, original, value, expected, expected_dtype):
""" test coercion triggered by insert """
target = original.copy()
res = target.insert(1, value)
tm.assert_index_equal(res, expected)
assert res.dtype == expected_dtype
@pytest.mark.parametrize(
"insert, coerced_val, coerced_dtype",
[
(1, 1, object),
(1.1, 1.1, object),
(False, False, object),
("x", "x", object),
],
)
def test_insert_index_object(self, insert, coerced_val, coerced_dtype):
obj = pd.Index(list("abcd"))
assert obj.dtype == object
exp = pd.Index(["a", coerced_val, "b", "c", "d"])
self._assert_insert_conversion(obj, insert, exp, coerced_dtype)
@pytest.mark.parametrize(
"insert, coerced_val, coerced_dtype",
[
(1, 1, np.int64),
(1.1, 1.1, np.float64),
(False, False, object), # GH#36319
("x", "x", object),
],
)
def test_insert_index_int64(self, insert, coerced_val, coerced_dtype):
obj = pd.Int64Index([1, 2, 3, 4])
assert obj.dtype == np.int64
exp = pd.Index([1, coerced_val, 2, 3, 4])
self._assert_insert_conversion(obj, insert, exp, coerced_dtype)
@pytest.mark.parametrize(
"insert, coerced_val, coerced_dtype",
[
(1, 1.0, np.float64),
(1.1, 1.1, np.float64),
(False, False, object), # GH#36319
("x", "x", object),
],
)
def test_insert_index_float64(self, insert, coerced_val, coerced_dtype):
obj = pd.Float64Index([1.0, 2.0, 3.0, 4.0])
assert obj.dtype == np.float64
exp = pd.Index([1.0, coerced_val, 2.0, 3.0, 4.0])
self._assert_insert_conversion(obj, insert, exp, coerced_dtype)
@pytest.mark.parametrize(
"fill_val,exp_dtype",
[
(pd.Timestamp("2012-01-01"), "datetime64[ns]"),
(pd.Timestamp("2012-01-01", tz="US/Eastern"), "datetime64[ns, US/Eastern]"),
],
ids=["datetime64", "datetime64tz"],
)
def test_insert_index_datetimes(self, fill_val, exp_dtype):
obj = pd.DatetimeIndex(
["2011-01-01", "2011-01-02", "2011-01-03", "2011-01-04"], tz=fill_val.tz
)
assert obj.dtype == exp_dtype
exp = pd.DatetimeIndex(
["2011-01-01", fill_val.date(), "2011-01-02", "2011-01-03", "2011-01-04"],
tz=fill_val.tz,
)
self._assert_insert_conversion(obj, fill_val, exp, exp_dtype)
if fill_val.tz:
msg = "Cannot compare tz-naive and tz-aware"
with pytest.raises(TypeError, match=msg):
obj.insert(1, pd.Timestamp("2012-01-01"))
msg = "Timezones don't match"
with pytest.raises(ValueError, match=msg):
obj.insert(1, pd.Timestamp("2012-01-01", tz="Asia/Tokyo"))
else:
msg = "Cannot compare tz-naive and tz-aware"
with pytest.raises(TypeError, match=msg):
obj.insert(1, pd.Timestamp("2012-01-01", tz="Asia/Tokyo"))
msg = "value should be a 'Timestamp' or 'NaT'. Got 'int' instead."
with pytest.raises(TypeError, match=msg):
obj.insert(1, 1)
pytest.xfail("ToDo: must coerce to object")
def test_insert_index_timedelta64(self):
obj = pd.TimedeltaIndex(["1 day", "2 day", "3 day", "4 day"])
assert obj.dtype == "timedelta64[ns]"
# timedelta64 + timedelta64 => timedelta64
exp = pd.TimedeltaIndex(["1 day", "10 day", "2 day", "3 day", "4 day"])
self._assert_insert_conversion(
obj, pd.Timedelta("10 day"), exp, "timedelta64[ns]"
)
# ToDo: must coerce to object
msg = "value should be a 'Timedelta' or 'NaT'. Got 'Timestamp' instead."
with pytest.raises(TypeError, match=msg):
obj.insert(1, pd.Timestamp("2012-01-01"))
# ToDo: must coerce to object
msg = "value should be a 'Timedelta' or 'NaT'. Got 'int' instead."
with pytest.raises(TypeError, match=msg):
obj.insert(1, 1)
@pytest.mark.parametrize(
"insert, coerced_val, coerced_dtype",
[
(pd.Period("2012-01", freq="M"), "2012-01", "period[M]"),
(pd.Timestamp("2012-01-01"), pd.Timestamp("2012-01-01"), object),
(1, 1, object),
("x", "x", object),
],
)
def test_insert_index_period(self, insert, coerced_val, coerced_dtype):
obj = pd.PeriodIndex(["2011-01", "2011-02", "2011-03", "2011-04"], freq="M")
assert obj.dtype == "period[M]"
data = [
pd.Period("2011-01", freq="M"),
coerced_val,
pd.Period("2011-02", freq="M"),
pd.Period("2011-03", freq="M"),
pd.Period("2011-04", freq="M"),
]
if isinstance(insert, pd.Period):
exp = pd.PeriodIndex(data, freq="M")
self._assert_insert_conversion(obj, insert, exp, coerced_dtype)
else:
msg = r"Unexpected keyword arguments {'freq'}"
with pytest.raises(TypeError, match=msg):
pd.Index(data, freq="M")
def test_insert_index_complex128(self):
pytest.xfail("Test not implemented")
def test_insert_index_bool(self):
pytest.xfail("Test not implemented")
class TestWhereCoercion(CoercionBase):
method = "where"
def _assert_where_conversion(
self, original, cond, values, expected, expected_dtype
):
""" test coercion triggered by where """
target = original.copy()
res = target.where(cond, values)
self._assert(res, expected, expected_dtype)
@pytest.mark.parametrize(
"fill_val,exp_dtype",
[(1, object), (1.1, object), (1 + 1j, object), (True, object)],
)
def test_where_object(self, index_or_series, fill_val, exp_dtype):
klass = index_or_series
obj = klass(list("abcd"))
assert obj.dtype == object
cond = klass([True, False, True, False])
if fill_val is True and klass is pd.Series:
ret_val = 1
else:
ret_val = fill_val
exp = klass(["a", ret_val, "c", ret_val])
self._assert_where_conversion(obj, cond, fill_val, exp, exp_dtype)
if fill_val is True:
values = klass([True, False, True, True])
else:
values = klass(fill_val * x for x in [5, 6, 7, 8])
exp = klass(["a", values[1], "c", values[3]])
self._assert_where_conversion(obj, cond, values, exp, exp_dtype)
@pytest.mark.parametrize(
"fill_val,exp_dtype",
[(1, np.int64), (1.1, np.float64), (1 + 1j, np.complex128), (True, object)],
)
def test_where_int64(self, index_or_series, fill_val, exp_dtype):
klass = index_or_series
if klass is pd.Index and exp_dtype is np.complex128:
pytest.skip("Complex Index not supported")
obj = klass([1, 2, 3, 4])
assert obj.dtype == np.int64
cond = klass([True, False, True, False])
exp = klass([1, fill_val, 3, fill_val])
self._assert_where_conversion(obj, cond, fill_val, exp, exp_dtype)
if fill_val is True:
values = klass([True, False, True, True])
else:
values = klass(x * fill_val for x in [5, 6, 7, 8])
exp = klass([1, values[1], 3, values[3]])
self._assert_where_conversion(obj, cond, values, exp, exp_dtype)
@pytest.mark.parametrize(
"fill_val, exp_dtype",
[(1, np.float64), (1.1, np.float64), (1 + 1j, np.complex128), (True, object)],
)
def test_where_float64(self, index_or_series, fill_val, exp_dtype):
klass = index_or_series
if klass is pd.Index and exp_dtype is np.complex128:
pytest.skip("Complex Index not supported")
obj = klass([1.1, 2.2, 3.3, 4.4])
assert obj.dtype == np.float64
cond = klass([True, False, True, False])
exp = klass([1.1, fill_val, 3.3, fill_val])
self._assert_where_conversion(obj, cond, fill_val, exp, exp_dtype)
if fill_val is True:
values = klass([True, False, True, True])
else:
values = klass(x * fill_val for x in [5, 6, 7, 8])
exp = klass([1.1, values[1], 3.3, values[3]])
self._assert_where_conversion(obj, cond, values, exp, exp_dtype)
@pytest.mark.parametrize(
"fill_val,exp_dtype",
[
(1, np.complex128),
(1.1, np.complex128),
(1 + 1j, np.complex128),
(True, object),
],
)
def test_where_series_complex128(self, fill_val, exp_dtype):
obj = pd.Series([1 + 1j, 2 + 2j, 3 + 3j, 4 + 4j])
assert obj.dtype == np.complex128
cond = pd.Series([True, False, True, False])
exp = pd.Series([1 + 1j, fill_val, 3 + 3j, fill_val])
self._assert_where_conversion(obj, cond, fill_val, exp, exp_dtype)
if fill_val is True:
values = pd.Series([True, False, True, True])
else:
values = pd.Series(x * fill_val for x in [5, 6, 7, 8])
exp = pd.Series([1 + 1j, values[1], 3 + 3j, values[3]])
self._assert_where_conversion(obj, cond, values, exp, exp_dtype)
@pytest.mark.parametrize(
"fill_val,exp_dtype",
[(1, object), (1.1, object), (1 + 1j, object), (True, np.bool_)],
)
def test_where_series_bool(self, fill_val, exp_dtype):
obj = pd.Series([True, False, True, False])
assert obj.dtype == np.bool_
cond = pd.Series([True, False, True, False])
exp = pd.Series([True, fill_val, True, fill_val])
self._assert_where_conversion(obj, cond, fill_val, exp, exp_dtype)
if fill_val is True:
values = pd.Series([True, False, True, True])
else:
values = pd.Series(x * fill_val for x in [5, 6, 7, 8])
exp = pd.Series([True, values[1], True, values[3]])
self._assert_where_conversion(obj, cond, values, exp, exp_dtype)
@pytest.mark.parametrize(
"fill_val,exp_dtype",
[
(pd.Timestamp("2012-01-01"), "datetime64[ns]"),
(pd.Timestamp("2012-01-01", tz="US/Eastern"), object),
],
ids=["datetime64", "datetime64tz"],
)
def test_where_series_datetime64(self, fill_val, exp_dtype):
obj = pd.Series(
[
pd.Timestamp("2011-01-01"),
pd.Timestamp("2011-01-02"),
pd.Timestamp("2011-01-03"),
pd.Timestamp("2011-01-04"),
]
)
assert obj.dtype == "datetime64[ns]"
cond = pd.Series([True, False, True, False])
exp = pd.Series(
[pd.Timestamp("2011-01-01"), fill_val, pd.Timestamp("2011-01-03"), fill_val]
)
self._assert_where_conversion(obj, cond, fill_val, exp, exp_dtype)
values = pd.Series(pd.date_range(fill_val, periods=4))
if fill_val.tz:
exp = pd.Series(
[
pd.Timestamp("2011-01-01"),
pd.Timestamp("2012-01-02 00:00", tz="US/Eastern"),
pd.Timestamp("2011-01-03"),
pd.Timestamp("2012-01-04 00:00", tz="US/Eastern"),
]
)
self._assert_where_conversion(obj, cond, values, exp, exp_dtype)
exp = pd.Series(
[
pd.Timestamp("2011-01-01"),
values[1],
pd.Timestamp("2011-01-03"),
values[3],
]
)
self._assert_where_conversion(obj, cond, values, exp, exp_dtype)
@pytest.mark.parametrize(
"fill_val",
[
pd.Timestamp("2012-01-01"),
pd.Timestamp("2012-01-01").to_datetime64(),
pd.Timestamp("2012-01-01").to_pydatetime(),
],
)
def test_where_index_datetime(self, fill_val):
exp_dtype = "datetime64[ns]"
obj = pd.Index(
[
pd.Timestamp("2011-01-01"),
pd.Timestamp("2011-01-02"),
pd.Timestamp("2011-01-03"),
pd.Timestamp("2011-01-04"),
]
)
assert obj.dtype == "datetime64[ns]"
cond = pd.Index([True, False, True, False])
result = obj.where(cond, fill_val)
expected = pd.DatetimeIndex([obj[0], fill_val, obj[2], fill_val])
tm.assert_index_equal(result, expected)
values = pd.Index(pd.date_range(fill_val, periods=4))
exp = pd.Index(
[
pd.Timestamp("2011-01-01"),
pd.Timestamp("2012-01-02"),
pd.Timestamp("2011-01-03"),
pd.Timestamp("2012-01-04"),
]
)
self._assert_where_conversion(obj, cond, values, exp, exp_dtype)
@pytest.mark.xfail(reason="GH 22839: do not ignore timezone, must be object")
def test_where_index_datetime64tz(self):
fill_val = pd.Timestamp("2012-01-01", tz="US/Eastern")
exp_dtype = object
obj = pd.Index(
[
pd.Timestamp("2011-01-01"),
pd.Timestamp("2011-01-02"),
pd.Timestamp("2011-01-03"),
pd.Timestamp("2011-01-04"),
]
)
assert obj.dtype == "datetime64[ns]"
cond = pd.Index([True, False, True, False])
msg = "Index\\(\\.\\.\\.\\) must be called with a collection of some kind"
with pytest.raises(TypeError, match=msg):
obj.where(cond, fill_val)
values = pd.Index(pd.date_range(fill_val, periods=4))
exp = pd.Index(
[
pd.Timestamp("2011-01-01"),
pd.Timestamp("2012-01-02", tz="US/Eastern"),
pd.Timestamp("2011-01-03"),
pd.Timestamp("2012-01-04", tz="US/Eastern"),
],
dtype=exp_dtype,
)
self._assert_where_conversion(obj, cond, values, exp, exp_dtype)
def test_where_index_complex128(self):
pytest.xfail("Test not implemented")
def test_where_index_bool(self):
pytest.xfail("Test not implemented")
def test_where_series_timedelta64(self):
pytest.xfail("Test not implemented")
def test_where_series_period(self):
pytest.xfail("Test not implemented")
@pytest.mark.parametrize(
"value", [pd.Timedelta(days=9), timedelta(days=9), np.timedelta64(9, "D")]
)
def test_where_index_timedelta64(self, value):
tdi = pd.timedelta_range("1 Day", periods=4)
cond = np.array([True, False, False, True])
expected = pd.TimedeltaIndex(["1 Day", value, value, "4 Days"])
result = tdi.where(cond, value)
tm.assert_index_equal(result, expected)
msg = "value should be a 'Timedelta', 'NaT', or array of thos"
with pytest.raises(TypeError, match=msg):
# wrong-dtyped NaT
tdi.where(cond, np.datetime64("NaT", "ns"))
def test_where_index_period(self):
dti = pd.date_range("2016-01-01", periods=3, freq="QS")
pi = dti.to_period("Q")
cond = np.array([False, True, False])
# Passinga valid scalar
value = pi[-1] + pi.freq * 10
expected = pd.PeriodIndex([value, pi[1], value])
result = pi.where(cond, value)
tm.assert_index_equal(result, expected)
# Case passing ndarray[object] of Periods
other = np.asarray(pi + pi.freq * 10, dtype=object)
result = pi.where(cond, other)
expected = pd.PeriodIndex([other[0], pi[1], other[2]])
tm.assert_index_equal(result, expected)
# Passing a mismatched scalar
msg = "value should be a 'Period', 'NaT', or array of those"
with pytest.raises(TypeError, match=msg):
pi.where(cond, pd.Timedelta(days=4))
msg = r"Input has different freq=D from PeriodArray\(freq=Q-DEC\)"
with pytest.raises(ValueError, match=msg):
pi.where(cond, pd.Period("2020-04-21", "D"))
class TestFillnaSeriesCoercion(CoercionBase):
# not indexing, but place here for consistency
method = "fillna"
def test_has_comprehensive_tests(self):
pytest.xfail("Test not implemented")
def _assert_fillna_conversion(self, original, value, expected, expected_dtype):
""" test coercion triggered by fillna """
target = original.copy()
res = target.fillna(value)
self._assert(res, expected, expected_dtype)
@pytest.mark.parametrize(
"fill_val, fill_dtype",
[(1, object), (1.1, object), (1 + 1j, object), (True, object)],
)
def test_fillna_object(self, index_or_series, fill_val, fill_dtype):
klass = index_or_series
obj = klass(["a", np.nan, "c", "d"])
assert obj.dtype == object
exp = klass(["a", fill_val, "c", "d"])
self._assert_fillna_conversion(obj, fill_val, exp, fill_dtype)
@pytest.mark.parametrize(
"fill_val,fill_dtype",
[(1, np.float64), (1.1, np.float64), (1 + 1j, np.complex128), (True, object)],
)
def test_fillna_float64(self, index_or_series, fill_val, fill_dtype):
klass = index_or_series
obj = klass([1.1, np.nan, 3.3, 4.4])
assert obj.dtype == np.float64
exp = klass([1.1, fill_val, 3.3, 4.4])
# float + complex -> we don't support a complex Index
# complex for Series,
# object for Index
if fill_dtype == np.complex128 and klass == pd.Index:
fill_dtype = object
self._assert_fillna_conversion(obj, fill_val, exp, fill_dtype)
@pytest.mark.parametrize(
"fill_val,fill_dtype",
[
(1, np.complex128),
(1.1, np.complex128),
(1 + 1j, np.complex128),
(True, object),
],
)
def test_fillna_series_complex128(self, fill_val, fill_dtype):
obj = pd.Series([1 + 1j, np.nan, 3 + 3j, 4 + 4j])
assert obj.dtype == np.complex128
exp = pd.Series([1 + 1j, fill_val, 3 + 3j, 4 + 4j])
self._assert_fillna_conversion(obj, fill_val, exp, fill_dtype)
@pytest.mark.parametrize(
"fill_val,fill_dtype",
[
(pd.Timestamp("2012-01-01"), "datetime64[ns]"),
(pd.Timestamp("2012-01-01", tz="US/Eastern"), object),
(1, object),
("x", object),
],
ids=["datetime64", "datetime64tz", "object", "object"],
)
def test_fillna_datetime(self, index_or_series, fill_val, fill_dtype):
klass = index_or_series
obj = klass(
[
pd.Timestamp("2011-01-01"),
pd.NaT,
pd.Timestamp("2011-01-03"),
pd.Timestamp("2011-01-04"),
]
)
assert obj.dtype == "datetime64[ns]"
exp = klass(
[
pd.Timestamp("2011-01-01"),
fill_val,
pd.Timestamp("2011-01-03"),
pd.Timestamp("2011-01-04"),
]
)
self._assert_fillna_conversion(obj, fill_val, exp, fill_dtype)
@pytest.mark.parametrize(
"fill_val,fill_dtype",
[
(pd.Timestamp("2012-01-01", tz="US/Eastern"), "datetime64[ns, US/Eastern]"),
(pd.Timestamp("2012-01-01"), object),
(pd.Timestamp("2012-01-01", tz="Asia/Tokyo"), object),
(1, object),
("x", object),
],
)
def test_fillna_datetime64tz(self, index_or_series, fill_val, fill_dtype):
klass = index_or_series
tz = "US/Eastern"
obj = klass(
[
pd.Timestamp("2011-01-01", tz=tz),
pd.NaT,
pd.Timestamp("2011-01-03", tz=tz),
pd.Timestamp("2011-01-04", tz=tz),
]
)
assert obj.dtype == "datetime64[ns, US/Eastern]"
exp = klass(
[
pd.Timestamp("2011-01-01", tz=tz),
fill_val,
pd.Timestamp("2011-01-03", tz=tz),
pd.Timestamp("2011-01-04", tz=tz),
]
)
self._assert_fillna_conversion(obj, fill_val, exp, fill_dtype)
def test_fillna_series_int64(self):
pytest.xfail("Test not implemented")
def test_fillna_index_int64(self):
pytest.xfail("Test not implemented")
def test_fillna_series_bool(self):
pytest.xfail("Test not implemented")
def test_fillna_index_bool(self):
pytest.xfail("Test not implemented")
def test_fillna_series_timedelta64(self):
pytest.xfail("Test not implemented")
def test_fillna_series_period(self):
pytest.xfail("Test not implemented")
def test_fillna_index_timedelta64(self):
pytest.xfail("Test not implemented")
def test_fillna_index_period(self):
pytest.xfail("Test not implemented")
class TestReplaceSeriesCoercion(CoercionBase):
klasses = ["series"]
method = "replace"
rep: Dict[str, List] = {}
rep["object"] = ["a", "b"]
rep["int64"] = [4, 5]
rep["float64"] = [1.1, 2.2]
rep["complex128"] = [1 + 1j, 2 + 2j]
rep["bool"] = [True, False]
rep["datetime64[ns]"] = [pd.Timestamp("2011-01-01"), pd.Timestamp("2011-01-03")]
for tz in ["UTC", "US/Eastern"]:
# to test tz => different tz replacement
key = f"datetime64[ns, {tz}]"
rep[key] = [
pd.Timestamp("2011-01-01", tz=tz),
pd.Timestamp("2011-01-03", tz=tz),
]
rep["timedelta64[ns]"] = [pd.Timedelta("1 day"), pd.Timedelta("2 day")]
@pytest.mark.parametrize("how", ["dict", "series"])
@pytest.mark.parametrize(
"to_key",
[
"object",
"int64",
"float64",
"complex128",
"bool",
"datetime64[ns]",
"datetime64[ns, UTC]",
"datetime64[ns, US/Eastern]",
"timedelta64[ns]",
],
ids=[
"object",
"int64",
"float64",
"complex128",
"bool",
"datetime64",
"datetime64tz",
"datetime64tz",
"timedelta64",
],
)
@pytest.mark.parametrize(
"from_key",
[
"object",
"int64",
"float64",
"complex128",
"bool",
"datetime64[ns]",
"datetime64[ns, UTC]",
"datetime64[ns, US/Eastern]",
"timedelta64[ns]",
],
)
def test_replace_series(self, how, to_key, from_key):
index = pd.Index([3, 4], name="xxx")
obj = pd.Series(self.rep[from_key], index=index, name="yyy")
assert obj.dtype == from_key
if from_key.startswith("datetime") and to_key.startswith("datetime"):
# tested below
return
elif from_key in ["datetime64[ns, US/Eastern]", "datetime64[ns, UTC]"]:
# tested below
return
if how == "dict":
replacer = dict(zip(self.rep[from_key], self.rep[to_key]))
elif how == "series":
replacer = pd.Series(self.rep[to_key], index=self.rep[from_key])
else:
raise ValueError
result = obj.replace(replacer)
if (from_key == "float64" and to_key in ("int64")) or (
from_key == "complex128" and to_key in ("int64", "float64")
):
if not IS64 or is_platform_windows():
pytest.skip(f"32-bit platform buggy: {from_key} -> {to_key}")
# Expected: do not downcast by replacement
exp = pd.Series(self.rep[to_key], index=index, name="yyy", dtype=from_key)
else:
exp = pd.Series(self.rep[to_key], index=index, name="yyy")
assert exp.dtype == to_key
tm.assert_series_equal(result, exp)
@pytest.mark.parametrize("how", ["dict", "series"])
@pytest.mark.parametrize(
"to_key",
["timedelta64[ns]", "bool", "object", "complex128", "float64", "int64"],
)
@pytest.mark.parametrize(
"from_key", ["datetime64[ns, UTC]", "datetime64[ns, US/Eastern]"]
)
def test_replace_series_datetime_tz(self, how, to_key, from_key):
index = pd.Index([3, 4], name="xyz")
obj = pd.Series(self.rep[from_key], index=index, name="yyy")
assert obj.dtype == from_key
if how == "dict":
replacer = dict(zip(self.rep[from_key], self.rep[to_key]))
elif how == "series":
replacer = pd.Series(self.rep[to_key], index=self.rep[from_key])
else:
raise ValueError
result = obj.replace(replacer)
exp = pd.Series(self.rep[to_key], index=index, name="yyy")
assert exp.dtype == to_key
tm.assert_series_equal(result, exp)
@pytest.mark.parametrize("how", ["dict", "series"])
@pytest.mark.parametrize(
"to_key",
["datetime64[ns]", "datetime64[ns, UTC]", "datetime64[ns, US/Eastern]"],
)
@pytest.mark.parametrize(
"from_key",
["datetime64[ns]", "datetime64[ns, UTC]", "datetime64[ns, US/Eastern]"],
)
def test_replace_series_datetime_datetime(self, how, to_key, from_key):
index = pd.Index([3, 4], name="xyz")
obj = pd.Series(self.rep[from_key], index=index, name="yyy")
assert obj.dtype == from_key
if how == "dict":
replacer = dict(zip(self.rep[from_key], self.rep[to_key]))
elif how == "series":
replacer = pd.Series(self.rep[to_key], index=self.rep[from_key])
else:
raise ValueError
result = obj.replace(replacer)
exp = pd.Series(self.rep[to_key], index=index, name="yyy")
assert exp.dtype == to_key
tm.assert_series_equal(result, exp)
def test_replace_series_period(self):
pytest.xfail("Test not implemented")