code: def __repr__(self) -> str:
      raise NotImplementedError
  
imports: import functools
  import itertools
  from typing import Any, NoReturn, Optional, Union, TYPE_CHECKING
  from cupyx.jit import _cuda_types
  from cupyx.jit import _cuda_typerules
label_desc: Use image node_id 1 for calling the Expr obj's underlying member method code with example usage: obj.__repr__() without return types