code: def _getitem(obj: Any, index: int) -> Any:
      if not isinstance(index, int):
          raise TypeError("Index must be an integer.")
  
      # Get item directly if obj is a list or tuple.
      if isinstance(obj, (list, tuple)):
          return obj[index]
  
      # If obj is a mutable, wrap it with a getitem mutable expression.
      if isinstance(obj, Mutable):
          return MutableExpression(
              _getitem, _getitem.__qualname__ + "({}, {})", [obj, index]
          )
  
      # Else obj is considered as a single item, return it directly.
      return obj
  
imports: from __future__ import annotations
  from typing import Any, Type, TypeVar, Tuple
  from torch import nn
  from nni.mutable import Mutable, MutableExpression
  from nni.nas.nn.pytorch import ParametrizedModule
label_desc: Use image node_id 1 for calling a global function with example usage: _getitem(obj, index) and returns: obj, obj, MutableExpression