class_docstr: A ComptimeVar represents a Python value, at some particular point
  in time, in the Python code we are symbolically evaluating with
  torchdynamo.  This must be distinguished from a runtime value, as
  at compile-time there are some properties of the variable we
  do not know (for example, if the ComptimeVar represents a Tensor,
  we only know metadata about the tensor; we do NOT know what the
  actual data in the Tensor is.)
code: def __init__(self, v):
      self.__variable = v
  
imports: import builtins
  import dis
  import traceback
  from typing import Optional, Union
  import torch
  from .exc import unimplemented
label_desc: Use image node_id 1 to create a new ComptimeVar object  with example: obj = ComptimeVar(v)