code: def interleaved_dtype(dtypes: list[DtypeObj]) -> DtypeObj | None:
      """
      Find the common dtype for `blocks`.
  
      Parameters
      ----------
      blocks : List[DtypeObj]
  
      Returns
      -------
      dtype : np.dtype, ExtensionDtype, or None
          None is returned when `blocks` is empty.
      """
      if not len(dtypes):
          return None
  
      return find_common_type(dtypes)
  
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 1 for calling a global function with example usage: interleaved_dtype(dtypes) and returns: find_common_type, None