code: def var_getattr(self, tx, name: str) -> VariableTracker:
      if name == "ndim":
          return ConstantVariable.create(self.value.ndim)
      return super().var_getattr(tx, name)
  
imports: import inspect
  from typing import Dict, List
  import torch
  from ..None import variables
  from ..exc import unimplemented
  from ..utils import istype
  from .base import VariableTracker
  from .constant import ConstantVariable
label_desc: Use image node_id 4 for calling the DeviceMeshVariable obj's underlying member method code with example usage: obj.var_getattr(tx, name) and returns: super, ConstantVariable