code: def missing_field_indices(variables: list[Variable]) -> list[int]:
      return [i for i, var in enumerate(variables) if var.has_missing]
  
imports: from __future__ import annotations
  import copyreg
  import pkgutil
  import types
  from typing import TYPE_CHECKING, cast
  import numpy
  import dedupe.variables
  from dedupe.variables.base import FieldType
  from dedupe.variables.base import MissingDataType, Variable
  from dedupe.variables.interaction import InteractionType
label_desc: Use image node_id 4 for calling a global function with example usage: missing_field_indices(variables) and returns: unknown