code: def edit_file(self, filename: str) -> None:
      import subprocess
  
      editor = self.get_editor()
      environ: t.Optional[t.Dict[str, str]] = None
  
      if self.env:
          environ = os.environ.copy()
          environ.update(self.env)
  
      try:
          c = subprocess.Popen(
              f'{editor} "{filename}"', env=environ, shell=True
          )
          exit_code = c.wait()
          if exit_code != 0:
              raise ClickException(
                  _("{editor}: Editing failed").format(editor=editor)
              )
      except OSError as e:
          raise ClickException(
              _("{editor}: Editing failed: {e}").format(
                  editor=editor, e=e
              )
          ) from e
  
imports: import contextlib
  import math
  import os
  import sys
  import time
  import typing
  from gettext import gettext
  from io import StringIO
  from types import TracebackType
  from ._compat import _default_text_stdout
  from ._compat import CYGWIN
  from ._compat import get_best_encoding
  from ._compat import isatty
  from ._compat import open_stream
  from ._compat import strip_ansi
  from ._compat import term_len
  from ._compat import WIN
  from .exceptions import ClickException
  from .utils import echo
label_desc: Use image node_id 3 for calling the Editor obj's underlying member method code with example usage: obj.edit_file(filename) without return types