class_docstr: Contains the error value.
class_docstr_tok: ["Contains","the","error","value","."]
code: def __init__(self, value: E) -> None:
      self._value = value
  
imports: from __future__ import annotations
  from abc import ABC, abstractmethod, abstractproperty
  from typing import Any, Callable, cast, Generic, NoReturn, Optional, TypeVar, Union
label_desc: Use image node_id 1 to create a new Err object from inherited base classes: Generic, Result with example: obj = Err(value)