class_docstr: Object representing a single job to execute.
  
  Notes
  -----
  This class should never be created directly by the user. Use :meth:`.Batch.new_job`,
  :meth:`.Batch.new_bash_job`, or :meth:`.Batch.new_python_job` instead.
class_docstr_tok: ["Object","representing","a","single","job","to","execute",".","Notes","--","--","-","This","class","should","never","be","created","directly","by","the","user",".","Use",":","meth",":","`",".Batch.new_job","`",",",":","meth",":","`",".Batch.new_bash_job","`",",","or",":","meth",":","`",".Batch.new_python_job","`","instead","."]
code: def env(self, variable: str, value: str):
      self._env[variable] = value
  
imports: import asyncio
  import inspect
  import os
  import re
  import textwrap
  import warnings
  from shlex import quote
  from typing import Any, Callable, Dict, List, Optional, Set, Tuple, Union, cast, Literal
  from typing_extensions import Self
  import hailtop.batch_client.client
  from .None import backend, batch
  from .None import resource
  from .exceptions import BatchException
label_desc: Use image node_id 9 for calling the Job obj's underlying member method code with example usage: obj.env(variable, value) without return types