code: def ensure_np_dtype(dtype: DtypeObj) -> np.dtype:
      # TODO: https://github.com/pandas-dev/pandas/issues/22791
      # Give EAs some input on what happens here. Sparse needs this.
      if isinstance(dtype, SparseDtype):
          dtype = dtype.subtype
          dtype = cast(np.dtype, dtype)
      elif isinstance(dtype, ExtensionDtype):
          dtype = np.dtype("object")
      elif dtype == np.dtype(str):
          dtype = np.dtype("object")
      return dtype
  
imports: from __future__ import annotations
  from typing import TYPE_CHECKING, Any, Literal, cast, final
  import numpy
  from pandas._config import using_copy_on_write, warn_copy_on_write
  from pandas._libs import algos, lib
  from pandas.errors import AbstractMethodError
  from pandas.util._validators import validate_bool_kwarg
  from pandas.core.dtypes.cast import find_common_type, np_can_hold_element
  from pandas.core.dtypes.dtypes import ExtensionDtype, SparseDtype
  from pandas.core.base import PandasObject
  from pandas.core.construction import extract_array
  from pandas.core.indexes.api import Index, default_index
label_desc: Use image node_id 2 for calling a global function with example usage: ensure_np_dtype(dtype) and returns: dtype