class_docstr: The environment in which the ReST files are translated.
  Stores an inventory of cross-file targets and provides doctree
  transformations to resolve links to them.
class_docstr_tok: ["The","environment","in","which","the","ReST","files","are","translated",".","Stores","an","inventory","of","cross-file","targets","and","provides","doctree","transformations","to","resolve","links","to","them","."]
docstr: Prepare to set up environment for reading.
code: def prepare_settings(self, docname: str) -> None:
      """Prepare to set up environment for reading."""
      self.temp_data["docname"] = docname
      # defaults to the global default, but can be re-set in a document
      self.temp_data["default_role"] = self.config.default_role
      self.temp_data["default_domain"] = self.domains.get(
          self.config.primary_domain
      )
  
imports: from __future__ import annotations
  import functools
  import os
  import pickle
  import time
  from collections import defaultdict
  from copy import copy
  from os import path
  from typing import TYPE_CHECKING, Any, Callable, NoReturn
  from sphinx import addnodes
  from sphinx.environment.adapters import toctree
  from sphinx.errors import BuildEnvironmentError, DocumentError, ExtensionError, SphinxError
  from sphinx.locale import __
  from sphinx.transforms import SphinxTransformer
  from sphinx.util import DownloadFiles, FilenameUniqDict, logging
  from sphinx.util.docutils import LoggingReporter
  from sphinx.util.i18n import CatalogRepository, docname_to_domain
  from sphinx.util.nodes import is_translatable
  from sphinx.util.osutil import canon_path, os_path
label_desc: Use image node_id 17 for calling the BuildEnvironment obj's underlying member method code with example usage: obj.prepare_settings(docname) without return types