REF: update iNaT imports (#34015)

Author: jbrockmendel

pandas/_libs/tslib.pyx

@@ -50,8 +50,7 @@ from pandas._libs.tslibs.conversion cimport (
     _TSObject, convert_datetime_to_tsobject,
     get_datetime64_nanos)
 
-# many modules still look for NaT and iNaT here despite them not being needed
-from pandas._libs.tslibs.nattype import nat_strings, iNaT  # noqa:F821
+from pandas._libs.tslibs.nattype import nat_strings
 from pandas._libs.tslibs.nattype cimport (
     checknull_with_nat, NPY_NAT, c_NaT as NaT)
 

pandas/core/algorithms.py

@@ -9,8 +9,7 @@
 
 import numpy as np
 
-from pandas._libs import Timestamp, algos, hashtable as htable, lib
-from pandas._libs.tslib import iNaT
+from pandas._libs import Timestamp, algos, hashtable as htable, iNaT, lib
 from pandas._typing import AnyArrayLike, ArrayLike, DtypeObj
 from pandas.util._decorators import doc
 

pandas/tests/base/test_fillna.py

@@ -6,7 +6,7 @@
 import numpy as np
 import pytest
 
-from pandas._libs.tslib import iNaT
+from pandas._libs import iNaT
 
 from pandas.core.dtypes.common import needs_i8_conversion
 from pandas.core.dtypes.generic import ABCMultiIndex

pandas/tests/base/test_unique.py

@@ -1,7 +1,7 @@
 import numpy as np
 import pytest
 
-from pandas._libs.tslib import iNaT
+from pandas._libs import iNaT
 
 from pandas.core.dtypes.common import is_datetime64tz_dtype, needs_i8_conversion
 

pandas/tests/base/test_value_counts.py

@@ -5,7 +5,7 @@
 import numpy as np
 import pytest
 
-from pandas._libs.tslib import iNaT
+from pandas._libs import iNaT
 from pandas.compat.numpy import np_array_datetime64_compat
 
 from pandas.core.dtypes.common import needs_i8_conversion

pandas/tests/extension/test_period.py

@@ -1,7 +1,7 @@
 import numpy as np
 import pytest
 
-from pandas._libs.tslib import iNaT
+from pandas._libs import iNaT
 
 from pandas.core.dtypes.dtypes import PeriodDtype
 

pandas/tests/frame/indexing/test_indexing.py

@@ -4,7 +4,7 @@
 import numpy as np
 import pytest
 
-from pandas._libs.tslib import iNaT
+from pandas._libs import iNaT
 
 from pandas.core.dtypes.common import is_float_dtype, is_integer
 

pandas/tests/indexes/common.py

@@ -4,7 +4,7 @@
 import numpy as np
 import pytest
 
-from pandas._libs.tslib import iNaT
+from pandas._libs import iNaT
 
 from pandas.core.dtypes.common import is_datetime64tz_dtype
 from pandas.core.dtypes.dtypes import CategoricalDtype

pandas/tests/series/methods/test_rank.py

@@ -3,8 +3,8 @@
 import numpy as np
 import pytest
 
+from pandas._libs import iNaT
 from pandas._libs.algos import Infinity, NegInfinity
-from pandas._libs.tslib import iNaT
 import pandas.util._test_decorators as td
 
 from pandas import NaT, Series, Timestamp, date_range

pandas/tests/series/test_constructors.py

@@ -5,8 +5,7 @@
 import numpy.ma as ma
 import pytest
 
-from pandas._libs import lib
-from pandas._libs.tslib import iNaT
+from pandas._libs import iNaT, lib
 
 from pandas.core.dtypes.common import is_categorical_dtype, is_datetime64tz_dtype
 from pandas.core.dtypes.dtypes import CategoricalDtype

pandas/tests/series/test_missing.py

@@ -4,7 +4,7 @@
 import pytest
 import pytz
 
-from pandas._libs.tslib import iNaT
+from pandas._libs import iNaT
 
 import pandas as pd
 from pandas import (

pandas/tests/test_take.py

@@ -4,7 +4,7 @@
 import numpy as np
 import pytest
 
-from pandas._libs.tslib import iNaT
+from pandas._libs import iNaT
 
 import pandas._testing as tm
 import pandas.core.algorithms as algos

pandas/tests/tslibs/test_conversion.py

@@ -4,8 +4,7 @@
 import pytest
 from pytz import UTC
 
-from pandas._libs.tslib import iNaT
-from pandas._libs.tslibs import conversion, timezones, tzconversion
+from pandas._libs.tslibs import conversion, iNaT, timezones, tzconversion
 
 from pandas import Timestamp, date_range
 import pandas._testing as tm