[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

tests/test_core.py

@@ -1,46 +1,23 @@
 from __future__ import annotations
 
-import itertools
 import logging
-import warnings
-from functools import partial, reduce
+from functools import partial
 from typing import TYPE_CHECKING, Callable
-from unittest.mock import MagicMock, patch
 
 import numpy as np
-import pandas as pd
 import pytest
-from numpy_groupies.aggregate_numpy import aggregate
 
-import flox
 from flox import xrutils
-from flox.aggregations import Aggregation, _initialize_aggregation, _maybe_promote_int
 from flox.core import (
-    HAS_NUMBAGG,
-    _choose_engine,
-    _convert_expected_groups_to_index,
-    _get_optimal_chunks_for_groups,
-    _normalize_indexes,
-    _validate_reindex,
-    factorize_,
-    find_group_cohorts,
     groupby_reduce,
-    rechunk_for_cohorts,
-    reindex_,
-    subset_to_blocks,
 )
 
 from . import (
     ALL_FUNCS,
-    BLOCKWISE_FUNCS,
     SCIPY_STATS_FUNCS,
     assert_equal,
-    assert_equal_tuple,
     has_cubed,
     has_dask,
-    raise_if_dask_computes,
-    requires_cubed,
-    requires_dask,
 )
 
 logger = logging.getLogger("flox")
@@ -53,8 +30,6 @@
 
 if has_dask:
     import dask
-    import dask.array as da
-    from dask.array import from_array
 
     dask.config.set(scheduler="sync")
 else:
@@ -64,13 +39,13 @@ def dask_array_ones(*args):
 
 
 if has_cubed:
-    import cubed
+    pass
 
 
 DEFAULT_QUANTILE = 0.9
 
 if TYPE_CHECKING:
-    from flox.core import T_Agg, T_Engine, T_ExpectedGroupsOpt, T_Method
+    pass
 
 
 def _get_array_func(func: str) -> Callable: