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# The build configuration file

The configuration directory must contain a file named `conf.py`. This file (containing Python code) is called the “build configuration file” and contains all configuration needed to customize Sphinx input and output behavior.

The configuration file is executed as Python code at build time (using `execfile()`, and with the current directory set to its containing directory), and therefore can execute arbitrarily complex code. Sphinx then reads simple names from the file’s namespace as its configuration.

Important points to note:

- If not otherwise documented, values must be strings, and their default is the empty string.
- The term “fully-qualified name” refers to a string that names an importable Python object inside a module; for example, the FQN `"sphinx.builders.Builder"` means the `Builder` class in the `sphinx.builders` module.
- Remember that document names use `/` as the path separator and don’t contain the file name extension.
- Since `conf.py` is read as a Python file, the usual rules apply for encodings and Unicode support: declare the encoding using an encoding cookie (a comment like `# -*- coding: utf-8 -*-`) and use Unicode string literals when you include non-ASCII characters in configuration values.
- The contents of the config namespace are pickled (so that Sphinx can find out when configuration changes), so it may not contain unpickleable values – delete them from the namespace with `del` if appropriate. Modules are removed automatically, so you don’t need to `del` your imports after use.

- There is a special object named `tags` available in the config file. It can be used to query and change the tags (see Including content based on tags). Use `tags.has('tag')` to query, `tags.add('tag')` and `tags.remove('tag')` to change. Only tags set via the `-t` command-line option or via `tags.add('tag')` can be queried using `tags.has('tag')`. Note that the current builder tag is not available in `conf.py`, as it is created after the builder is initialized.

## General configuration

`extensions`

  A list of strings that are module names of Sphinx extensions. These can be extensions coming with Sphinx (named `sphinx.ext.*`) or custom ones.

  Note that you can extend `sys.path` within the conf file if your extensions live in another directory – but make sure you use absolute paths. If your extension path is relative to the configuration directory, use `os.path.abspath()` like so:

      import sys, os

      sys.path.append(os.path.abspath('sphinxext'))

      extensions = ['extname']

  That way, you can load an extension called `extname` from the subdirectory `sphinxext`.

  The configuration file itself can be an extension; for that, you only need to provide a `setup()` function in it.

`source_suffix`

  The file name extension, or list of extensions, of source files. Only files with this suffix will be read as sources. Default is `'.rst'`.

  Changed in version 1.3: Can now be a list of extensions.

`source_encoding`

  The encoding of all reST source files. The recommended encoding, and the default value, is `'utf-8-sig'`.

  New in version 0.5: Previously, Sphinx accepted only UTF-8 encoded sources.

`source_parsers`

  If given, a dictionary of parser classes for different source suffices. The keys are the suffix, the values can be either a class or a string giving a fully-qualified name of a parser class. The parser class can be either `docutils.parsers.Parser` or `sphinx.parsers.Parser`. Files with a suffix that is not in the dictionary will be parsed with the default reStructuredText parser.

  For example:

      source_parsers = {'.md': 'some.markdown.module.Parser'}

  New in version 1.3.

`master_doc`

  The document name of the “master” document, that is, the document that contains the root `toctree` directive. Default is `'contents'`.

`exclude_patterns`

  A list of glob-style patterns that should be excluded when looking for source files. [1] They are matched against the source file names relative to the source directory, using slashes as directory separators on all platforms.

  Example patterns:

  - `'library/xml.rst'` – ignores the `library/xml.rst` file (replaces entry in `unused_docs`)
  - `'library/xml'` – ignores the `library/xml` directory (replaces entry in `exclude_trees`)
  - `'library/xml*'` – ignores all files and directories starting with `library/xml`
  - `'**/.svn'` – ignores all `.svn` directories (replaces entry in `exclude_dirnames`)

  `exclude_patterns` is also consulted when looking for static files in `html_static_path` and `html_extra_path`.

  New in version 1.0.

`templates_path`

  A list of paths that contain extra templates (or templates that overwrite builtin/theme-specific templates). Relative paths are taken as relative to the configuration directory.

  Changed in version 1.3: As these files are not meant to be built, they are automatically added to `exclude_patterns`.

`template_bridge`

  A string with the fully-qualified name of a callable (or simply a class) that returns an instance of `TemplateBridge`. This instance is then used to render HTML documents, and possibly the output of other builders (currently the changes builder). (Note that the template bridge must be made theme-aware if HTML themes are to be used.)

`rst_epilog`

  A string of reStructuredText that will be included at the end of every source file that is read. This is the right place to add substitutions that should be available in every file. An example:

      rst_epilog = """
      .. |psf| replace:: Python Software Foundation
      """

  New in version 0.6.

`rst_prolog`

  A string of reStructuredText that will be included at the beginning of every source file that is read.

  New in version 1.0.

`primary_domain`

  The name of the default domain. Can also be `None` to disable a default domain. The default is `'py'`. Those objects in other domains (whether the domain name is given explicitly, or selected by a `default-domain` directive) will have the domain name explicitly prepended when named (e.g., when the default domain is C, Python functions will be named “Python function”, not just “function”).

  New in version 1.0.

`default_role`

  The name of a reST role (builtin or Sphinx extension) to use as the default role, that is, for text marked up ``like this``. This can be set to `'py:obj'` to make ``filter`` a cross-reference to the Python function “filter”. The default is `None`, which doesn’t reassign the default role.

  The default role can always be set within individual documents using the standard reST `default-role` directive.

  New in version 0.4.

`keep_warnings`

  If true, keep warnings as “system message” paragraphs in the built documents. Regardless of this setting, warnings are always written to the standard error stream when `sphinx-build` is run.

  The default is `False`, the pre-0.5 behavior was to always keep them.

  New in version 0.5.

`suppress_warnings`

  A list of warning types to suppress arbitrary warning messages.

  Sphinx supports following warning types:

  - ref.term
  - ref.ref
  - ref.numref
  - ref.keyword
  - ref.option
  - ref.citation
  - ref.doc

  You can choose from these types.

  Now, this option should be considered experimental.

  New in version 1.4.

`needs_sphinx`

  If set to a `major.minor` version string like `'1.1'`, Sphinx will compare it with its version and refuse to build if it is too old. Default is no requirement.

  New in version 1.0.

  Changed in version 1.4: also accepts micro version string

`needs_extensions`

  This value can be a dictionary specifying version requirements for extensions in `extensions`, e.g. `needs_extensions = {'sphinxcontrib.something': '1.5'}`. The version strings should be in the form `major.minor`. Requirements do not have to be specified for all extensions, only for those you want to check.

  This requires that the extension specifies its version to Sphinx (see Developing extensions for Sphinx for how to do that).

  New in version 1.3.

`nitpicky`

  If true, Sphinx will warn about all references where the target cannot be found. Default is `False`. You can activate this mode temporarily using the `-n` command-line switch.

  New in version 1.0.

`nitpick_ignore`

  A list of `(type, target)` tuples (by default empty) that should be ignored when generating warnings in “nitpicky mode”. Note that `type` should include the domain name if present. Example entries would be `('py:func', 'int')` or `('envvar', 'LD_LIBRARY_PATH')`.

  New in version 1.1.

`numfig`

  If true, figures, tables and code-blocks are automatically numbered if they have a caption. For now, it works only with the HTML builder. Default is `False`.

  New in version 1.3.

`numfig_format`

  A dictionary mapping `'figure'`, `'table'` and `'code-block'` to strings that are used for format of figure numbers. Default is to use `'Fig. %s'` for `'figure'`, `'Table %s'` for `'table'` and `'Listing %s'` for `'code-block'`.

  New in version 1.3.

`numfig_secnum_depth`

  The scope of figure numbers, that is, the numfig feature numbers figures in which scope. `0` means “whole document”. `1` means “in a section”. Sphinx numbers like x.1, x.2, x.3... `2` means “in a subsection”. Sphinx numbers like x.x.1, x.x.2, x.x.3..., and so on. Default is `1`.

  New in version 1.3.

## Project information

`project`

  The documented project’s name.

`copyright`

  A copyright statement in the style `'2008, Author Name'`.

`version`

  The major project version, used as the replacement for `|version|`. For example, for the Python documentation, this may be something like `2.6`.

`release`

  The full project version, used as the replacement for `|release|` and e.g. in the HTML templates. For example, for the Python documentation, this may be something like `2.6.0rc1`.

  If you don’t need the separation provided between `version` and `release`, just set them both to the same value.

`today`
`today_fmt`

  These values determine how to format the current date, used as the replacement for `|today|`.

  - If you set `today` to a non-empty value, it is used.
  - Otherwise, the current time is formatted using Locale Data Markup Language and the format given in `today_fmt`.

  The default is no `today` and a `today_fmt` of `'MMMM dd, YYYY'` (or, if translation is enabled with `language`, an equivalent %format for the selected locale).

  Changed in version 1.4: Format specification was changed from strftime to Locale Data Markup Language. strftime format is also supported for backward compatibility until Sphinx-1.5.

`highlight_language`

  The default language to highlight source code in. The default is `'python3'`. The value should be a valid Pygments lexer name, see Showing code examples for more details.

  New in version 0.5.

  Changed in version 1.4: The default is now `'default'`. It is similar to `'python3'`; it is mostly a superset of `'python'`. but it fallbacks to `'none'` without warning if failed. `'python3'` and other languages will emit warning if failed. If you prefer Python 2 only highlighting, you can set it back to `'python'`.

`highlight_options`

  A dictionary of options that modify how the lexer specified by `highlight_language` generates highlighted source code. These are lexer-specific; for the options understood by each, see the Pygments documentation.

  New in version 1.3.

`pygments_style`

  The style name to use for Pygments highlighting of source code. If not set, either the theme’s default style or `'sphinx'` is selected for HTML output.

  Changed in version 0.3: If the value is a fully-qualified name of a custom Pygments style class, this is then used as custom style.

`add_function_parentheses`

  A boolean that decides whether parentheses are appended to function and method role text (e.g. the content of `:func:`input``) to signify that the name is callable. Default is `True`.

`add_module_names`

  A boolean that decides whether module names are prepended to all object names (for object types where a “module” of some kind is defined), e.g. for `py:function` directives. Default is `True`.

`show_authors`

  A boolean that decides whether `codeauthor` and `sectionauthor` directives produce any output in the built files.

`modindex_common_prefix`

  A list of prefixes that are ignored for sorting the Python module index (e.g., if this is set to `['foo.']`, then `foo.bar` is shown under `B`, not `F`). This can be handy if you document a project that consists of a single package. Works only for the HTML builder currently. Default is `[]`.

  New in version 0.6.

`trim_footnote_reference_space`

  Trim spaces before footnote references that are necessary for the reST parser to recognize the footnote, but do not look too nice in the output.

  New in version 0.6.

`trim_doctest_flags`

  If true, doctest flags (comments looking like `# doctest: FLAG, ...`) at the ends of lines and `<BLANKLINE>` markers are removed for all code blocks showing interactive Python sessions (i.e. doctests). Default is `True`. See the extension `doctest` for more possibilities of including doctests.

  New in version 1.0.

  Changed in version 1.1: Now also removes `<BLANKLINE>`.

## Options for internationalization

These options influence Sphinx’s Native Language Support. See the documentation on Internationalization for details.

`language`

  The code for the language the docs are written in. Any text automatically generated by Sphinx will be in that language. Also, Sphinx will try to substitute individual paragraphs from your documents with the translation sets obtained from `locale_dirs`. Sphinx will search language-specific figures named by figure_language_filename and substitute them for original figures. In the LaTeX builder, a suitable language will be selected as an option for the Babel package. Default is `None`, which means that no translation will be done.

  New in version 0.5.

  Changed in version 1.4: Support figure substitution

  Currently supported languages by Sphinx are:

  - `bn` – Bengali
  - `ca` – Catalan
  - `cs` – Czech
  - `da` – Danish
  - `de` – German
  - `en` – English
  - `es` – Spanish
  - `et` – Estonian
  - `eu` – Basque
  - `fa` – Iranian
  - `fi` – Finnish
  - `fr` – French
  - `he` – Hebrew
  - `hr` – Croatian
  - `hu` – Hungarian
  - `id` – Indonesian
  - `it` – Italian
  - `ja` – Japanese
  - `ko` – Korean
  - `lt` – Lithuanian
  - `lv` – Latvian
  - `mk` – Macedonian
  - `nb_NO` – Norwegian Bokmal
  - `ne` – Nepali
  - `nl` – Dutch
  - `pl` – Polish
  - `pt_BR` – Brazilian Portuguese
  - `pt_PT` – European Portuguese
  - `ru` – Russian
  - `si` – Sinhala
  - `sk` – Slovak
  - `sl` – Slovenian
  - `sv` – Swedish
  - `tr` – Turkish
  - `uk_UA` – Ukrainian
  - `vi` – Vietnamese
  - `zh_CN` – Simplified Chinese
  - `zh_TW` – Traditional Chinese

`locale_dirs`

  New in version 0.5.

  Directories in which to search for additional message catalogs (see `language`), relative to the source directory. The directories on this path are searched by the standard `gettext` module.

  Internal messages are fetched from a text domain of `sphinx`; so if you add the directory `./locale` to this setting, the message catalogs (compiled from `.po` format using msgfmt) must be in `./locale/language/LC_MESSAGES/sphinx.mo`. The text domain of individual documents depends on `gettext_compact`.

  The default is `[]`.

`gettext_compact`

  New in version 1.1.

  If true, a document’s text domain is its docname if it is a top-level project file and its very base directory otherwise.

  By default, the document `markup/code.rst` ends up in the `markup` text domain. With this option set to `False`, it is `markup/code`.

`gettext_uuid`

  If true, Sphinx generates uuid information for version tracking in message catalogs. It is used for:

  - Add uid line for each msgids in .pot files.
  - Calculate similarity between new msgids and previously saved old msgids. This calculation takes a long time.

  If you want to accelerate the calculation, you can use `python-levenshtein` 3rd-party package written in C by using pip install python-levenshtein.

  The default is `False`.

  New in version 1.3.

`gettext_location`

  If true, Sphinx generates location information for messages in message catalogs.

  The default is `True`.

  New in version 1.3.

`gettext_auto_build`

  If true, Sphinx builds mo file for each translation catalog files.

  The default is `True`.

  New in version 1.3.

`gettext_additional_targets`

  To specify names to enable gettext extracting and translation applying for i18n additionally. You can specify below names:

  Index: | index terms
  Literal-block: | literal blocks: `::` and `code-block`.
  Doctest-block: | doctest block
  Raw: | raw content
  Image: | image/figure uri and alt

  For example: `gettext_additional_targets = ['literal-block', 'image']`.

  The default is `[]`.

  New in version 1.3.

`figure_language_filename`

  The filename format for language-specific figures. The default value is `{root}.{language}{ext}`. It will be expanded to `dirname/filename.en.png` from `.. image:: dirname/filename.png`.

  New in version 1.4.

## Options for HTML output

These options influence HTML as well as HTML Help output, and other builders that use Sphinx’s HTMLWriter class.

`html_theme`

  The “theme” that the HTML output should use. See the section about theming. The default is `'alabaster'`.

  New in version 0.6.

`html_theme_options`

  A dictionary of options that influence the look and feel of the selected theme. These are theme-specific. For the options understood by the builtin themes, see this section.

  New in version 0.6.

`html_theme_path`

  A list of paths that contain custom themes, either as subdirectories or as zip files. Relative paths are taken as relative to the configuration directory.

  New in version 0.6.

`html_style`

  The style sheet to use for HTML pages. A file of that name must exist either in Sphinx’s `static/` path, or in one of the custom paths given in `html_static_path`. Default is the stylesheet given by the selected theme. If you only want to add or override a few things compared to the theme’s stylesheet, use CSS `@import` to import the theme’s stylesheet.

`html_title`

  The “title” for HTML documentation generated with Sphinx’s own templates. This is appended to the `<title>` tag of individual pages, and used in the navigation bar as the “topmost” element. It defaults to `'<project> v<revision> documentation'`.

`html_short_title`

  A shorter “title” for the HTML docs. This is used in for links in the header and in the HTML Help docs. If not given, it defaults to the value of `html_title`.

  New in version 0.4.

`html_context`

  A dictionary of values to pass into the template engine’s context for all pages. Single values can also be put in this dictionary using the `-A` command-line option of `sphinx-build`.

  New in version 0.5.

`html_logo`

  If given, this must be the name of an image file (path relative to the configuration directory) that is the logo of the docs. It is placed at the top of the sidebar; its width should therefore not exceed 200 pixels. Default: `None`.

  New in version 0.4.1: The image file will be copied to the `_static` directory of the output HTML, but only if the file does not already exist there.

`html_favicon`

  If given, this must be the name of an image file (path relative to the configuration directory) that is the favicon of the docs. Modern browsers use this as the icon for tabs, windows and bookmarks. It should be a Windows-style icon file (`.ico`), which is 16x16 or 32x32 pixels large. Default: `None`.

  New in version 0.4: The image file will be copied to the `_static` directory of the output HTML, but only if the file does not already exist there.

`html_static_path`

  A list of paths that contain custom static files (such as style sheets or script files). Relative paths are taken as relative to the configuration directory. They are copied to the output’s `_static` directory after the theme’s static files, so a file named `default.css` will overwrite the theme’s `default.css`.

  Changed in version 0.4: The paths in `html_static_path` can now contain subdirectories.

  Changed in version 1.0: The entries in `html_static_path` can now be single files.

`html_extra_path`

  A list of paths that contain extra files not directly related to the documentation, such as `robots.txt` or `.htaccess`. Relative paths are taken as relative to the configuration directory. They are copied to the output directory. They will overwrite any existing file of the same name.

  As these files are not meant to be built, they are automatically added to `exclude_patterns`.

  New in version 1.2.

  Changed in version 1.4: The dotfiles in the extra directory will be copied to the output directory. And it refers `exclude_patterns` on copying extra files and directories, and ignores if path matches to patterns.

`html_last_updated_fmt`

  If this is not None, a ‘Last updated on:’ timestamp is inserted at every page bottom, using the given Locale Data Markup Language format. The empty string is equivalent to `'MMM dd, YYYY'` (or a locale-dependent equivalent).

  Changed in version 1.4: Format specification was changed from strftime to Locale Data Markup Language. strftime format is also supported for backward compatibility until Sphinx-1.5.

`html_use_smartypants`

  If true, SmartyPants will be used to convert quotes and dashes to typographically correct entities. Default: `True`.

`html_add_permalinks`

  Sphinx will add “permalinks” for each heading and description environment as paragraph signs that become visible when the mouse hovers over them.

  This value determines the text for the permalink; it defaults to `"¶"`. Set it to `None` or the empty string to disable permalinks.

  New in version 0.6: Previously, this was always activated.

  Changed in version 1.1: This can now be a string to select the actual text of the link. Previously, only boolean values were accepted.

`html_sidebars`

  Custom sidebar templates, must be a dictionary that maps document names to template names.

  The keys can contain glob-style patterns [1], in which case all matching documents will get the specified sidebars. (A warning is emitted when a more than one glob-style pattern matches for any document.)

  The values can be either lists or single strings.

  - If a value is a list, it specifies the complete list of sidebar templates to include. If all or some of the default sidebars are to be included, they must be put into this list as well.

    The default sidebars (for documents that don’t match any pattern) are: `['localtoc.html', 'relations.html', 'sourcelink.html', 'searchbox.html']`.

  - If a value is a single string, it specifies a custom sidebar to be added between the `'sourcelink.html'` and `'searchbox.html'` entries. This is for compatibility with Sphinx versions before 1.0.

  Builtin sidebar templates that can be rendered are:

  - localtoc.html – a fine-grained table of contents of the current document
  - globaltoc.html – a coarse-grained table of contents for the whole documentation set, collapsed
  - relations.html – two links to the previous and next documents
  - sourcelink.html – a link to the source of the current document, if enabled in `html_show_sourcelink`
  - searchbox.html – the “quick search” box

  Example:

      html_sidebars = {
         '**': ['globaltoc.html', 'sourcelink.html', 'searchbox.html'],
         'using/windows': ['windowssidebar.html', 'searchbox.html'],
      }

  This will render the custom template `windowssidebar.html` and the quick search box within the sidebar of the given document, and render the default sidebars for all other pages (except that the local TOC is replaced by the global TOC).

  New in version 1.0: The ability to use globbing keys and to specify multiple sidebars.

  Note that this value only has no effect if the chosen theme does not possess a sidebar, like the builtin scrolls and haiku themes.

`html_additional_pages`

  Additional templates that should be rendered to HTML pages, must be a dictionary that maps document names to template names.

  Example:

      html_additional_pages = {
          'download': 'customdownload.html',
      }

  This will render the template `customdownload.html` as the page `download.html`.

`html_domain_indices`

  If true, generate domain-specific indices in addition to the general index. For e.g. the Python domain, this is the global module index. Default is `True`.

  This value can be a bool or a list of index names that should be generated. To find out the index name for a specific index, look at the HTML file name. For example, the Python module index has the name `'py-modindex'`.

  New in version 1.0.

`html_use_modindex`

  If true, add a module index to the HTML documents. Default is `True`.

  Deprecated since version 1.0: Use `html_domain_indices`.

`html_use_index`

  If true, add an index to the HTML documents. Default is `True`.

  New in version 0.4.

`html_split_index`

  If true, the index is generated twice: once as a single page with all the entries, and once as one page per starting letter. Default is `False`.

  New in version 0.4.

`html_copy_source`

  If true, the reST sources are included in the HTML build as `_sources/name`. The default is `True`.

  Warning

  If this config value is set to `False`, the JavaScript search function will only display the titles of matching documents, and no excerpt from the matching contents.

`html_show_sourcelink`

  If true (and `html_copy_source` is true as well), links to the reST sources will be added to the sidebar. The default is `True`.

  New in version 0.6.

`html_use_opensearch`

  If nonempty, an OpenSearch description file will be output, and all pages will contain a `<link>` tag referring to it. Since OpenSearch doesn’t support relative URLs for its search page location, the value of this option must be the base URL from which these documents are served (without trailing slash), e.g. `"https://docs.python.org"`. The default is `''`.

`html_file_suffix`

  This is the file name suffix for generated HTML files. The default is `".html"`.

  New in version 0.4.

`html_link_suffix`

  Suffix for generated links to HTML files. The default is whatever `html_file_suffix` is set to; it can be set differently (e.g. to support different web server setups).

  New in version 0.6.

`html_translator_class`

  A string with the fully-qualified name of a HTML Translator class, that is, a subclass of Sphinx’s `HTMLTranslator`, that is used to translate document trees to HTML. Default is `None` (use the builtin translator).

  See also

  `set_translator()`

`html_show_copyright`

  If true, “(C) Copyright ...” is shown in the HTML footer. Default is `True`.

  New in version 1.0.

`html_show_sphinx`

  If true, “Created using Sphinx” is shown in the HTML footer. Default is `True`.

  New in version 0.4.

`html_output_encoding`

  Encoding of HTML output files. Default is `'utf-8'`. Note that this encoding name must both be a valid Python encoding name and a valid HTML `charset` value.

  New in version 1.0.

`html_compact_lists`

  If true, list items containing only a single paragraph will not be rendered with a `<p>` element. This is standard docutils behavior. Default: `True`.

  New in version 1.0.

`html_secnumber_suffix`

  Suffix for section numbers. Default: `". "`. Set to `" "` to suppress the final dot on section numbers.

  New in version 1.0.

`html_search_language`

  Language to be used for generating the HTML full-text search index. This defaults to the global language selected with `language`. If there is no support for this language, `"en"` is used which selects the English language.

  Support is present for these languages:

  - `da` – Danish
  - `nl` – Dutch
  - `en` – English
  - `fi` – Finnish
  - `fr` – French
  - `de` – German
  - `hu` – Hungarian
  - `it` – Italian
  - `ja` – Japanese
  - `no` – Norwegian
  - `pt` – Portuguese
  - `ro` – Romanian
  - `ru` – Russian
  - `es` – Spanish
  - `sv` – Swedish
  - `tr` – Turkish
  - `zh` – Chinese

  Accelerating build speed

  Each language (except Japanese) provides its own stemming algorithm. Sphinx uses a Python implementation by default. You can use a C implementation to accelerate building the index file.

  - PorterStemmer (`en`)
  - PyStemmer (all languages)

  New in version 1.1: With support for `en` and `ja`.

  Changed in version 1.3: Added additional languages.

`html_search_options`

  A dictionary with options for the search language support, empty by default. The meaning of these options depends on the language selected.

  The English support has no options.

  The Japanese support has these options:

  Type: | type is dotted module path string to specify Splitter implementation which should be derived from `sphinx.search.ja.BaseSplitter`. If not specified or None is specified, `'sphinx.search.ja.DefaultSplitter'` will be used. You can choose from these modules:
  ‘sphinx.search.ja.DefaultSplitter’:
  | TinySegmenter algorithm. This is default splitter.
  ‘sphinx.search.ja.MeCabSplitter’:
  | MeCab binding. To use this splitter, ‘mecab’ python binding or dynamic link library (‘libmecab.so’ for linux, ‘libmecab.dll’ for windows) is required.
  ‘sphinx.search.ja.JanomeSplitter’:
  | Janome binding. To use this splitter, Janome is required.
  To keep compatibility, `'mecab'`, `'janome'` and `'default'` are also acceptable. However it will be deprecated in Sphinx-1.6.

  Other option values depend on splitter value which you choose.

  Options for `'mecab'`:

    dic_enc: | dic_enc option is the encoding for the MeCab algorithm.
    dict: | dict option is the dictionary to use for the MeCab algorithm.
    lib: | lib option is the library name for finding the MeCab library via ctypes if the Python binding is not installed.

    For example:

        html_search_options = {
            'type': 'mecab',
            'dic_enc': 'utf-8',
            'dict': '/path/to/mecab.dic',
            'lib': '/path/to/libmecab.so',
        }

  Options for `'janome'`:

    user_dic: | user_dic option is the user dictionary file path for Janome.
    user_dic_enc: | user_dic_enc option is the encoding for the user dictionary file specified by `user_dic` option. Default is ‘utf8’.

  New in version 1.1.

  Changed in version 1.4: html_search_options for Japanese is re-organized and any custom splitter can be used by type settings.

  The Chinese support has these options:

  - `dict` – the `jieba` dictionary path if want to use custom dictionary.

`html_search_scorer`

  The name of a JavaScript file (relative to the configuration directory) that implements a search results scorer. If empty, the default will be used.

  New in version 1.2.

`html_scaled_image_link`

  If true, images itself links to the original image if it doesn’t have ‘target’ option or scale related options: ‘scale’, ‘width’, ‘height’. The default is `True`.

  New in version 1.3.

`htmlhelp_basename`

  Output file base name for HTML help builder. Default is `'pydoc'`.

## Options for Apple Help output

New in version 1.3.

These options influence the Apple Help output. This builder derives from the HTML builder, so the HTML options also apply where appropriate.

Note

Apple Help output will only work on Mac OS X 10.6 and higher, as it requires the hiutil and codesign command line tools, neither of which are Open Source.

You can disable the use of these tools using `applehelp_disable_external_tools`, but the result will not be a valid help book until the indexer is run over the `.lproj` folders within the bundle.

`applehelp_bundle_name`

  The basename for the Apple Help Book. Defaults to the `project` name.

`applehelp_bundle_id`

  The bundle ID for the help book bundle.

  Warning

  You must set this value in order to generate Apple Help.

`applehelp_dev_region`

  The development region. Defaults to `'en-us'`, which is Apple’s recommended setting.

`applehelp_bundle_version`

  The bundle version (as a string). Defaults to `'1'`.

`applehelp_icon`

  The help bundle icon file, or `None` for no icon. According to Apple’s documentation, this should be a 16-by-16 pixel version of the application’s icon with a transparent background, saved as a PNG file.

`applehelp_kb_product`

  The product tag for use with `applehelp_kb_url`. Defaults to `'<project>-<release>'`.

`applehelp_kb_url`

  The URL for your knowledgebase server, e.g. `https://example.com/kbsearch.py?p='product'&q='query'&l='lang'`. Help Viewer will replace the values `'product'`, `'query'` and `'lang'` at runtime with the contents of `applehelp_kb_product`, the text entered by the user in the search box and the user’s system language respectively.

  Defaults to `None` for no remote search.

`applehelp_remote_url`

  The URL for remote content. You can place a copy of your Help Book’s `Resources` folder at this location and Help Viewer will attempt to use it to fetch updated content.

  e.g. if you set it to `https://example.com/help/Foo/` and Help Viewer wants a copy of `index.html` for an English speaking customer, it will look at `https://example.com/help/Foo/en.lproj/index.html`.

  Defaults to `None` for no remote content.

`applehelp_index_anchors`

  If `True`, tell the help indexer to index anchors in the generated HTML. This can be useful for jumping to a particular topic using the `AHLookupAnchor` function or the `openHelpAnchor:inBook:` method in your code. It also allows you to use `help:anchor` URLs; see the Apple documentation for more information on this topic.

`applehelp_min_term_length`

  Controls the minimum term length for the help indexer. Defaults to `None`, which means the default will be used.

`applehelp_stopwords`

  Either a language specification (to use the built-in stopwords), or the path to a stopwords plist, or `None` if you do not want to use stopwords. The default stopwords plist can be found at `/usr/share/hiutil/Stopwords.plist` and contains, at time of writing, stopwords for the following languages:

  Language | Code
  --- | ---
  English | en
  German | de
  Spanish | es
  French | fr
  Swedish | sv
  Hungarian | hu
  Italian | it

  Defaults to `language`, or if that is not set, to `en`.

`applehelp_locale`

  Specifies the locale to generate help for. This is used to determine the name of the `.lproj` folder inside the Help Book’s `Resources`, and is passed to the help indexer.

  Defaults to `language`, or if that is not set, to `en`.

`applehelp_title`

  Specifies the help book title. Defaults to `'<project> Help'`.

`applehelp_codesign_identity`

  Specifies the identity to use for code signing, or `None` if code signing is not to be performed.

  Defaults to the value of the environment variable `CODE_SIGN_IDENTITY`, which is set by Xcode for script build phases, or `None` if that variable is not set.

`applehelp_codesign_flags`

  A list of additional arguments to pass to codesign when signing the help book.

  Defaults to a list based on the value of the environment variable `OTHER_CODE_SIGN_FLAGS`, which is set by Xcode for script build phases, or the empty list if that variable is not set.

`applehelp_indexer_path`

  The path to the hiutil program. Defaults to `'/usr/bin/hiutil'`.

`applehelp_codesign_path`

  The path to the codesign program. Defaults to `'/usr/bin/codesign'`.

`applehelp_disable_external_tools`

  If `True`, the builder will not run the indexer or the code signing tool, no matter what other settings are specified.

  This is mainly useful for testing, or where you want to run the Sphinx build on a non-Mac OS X platform and then complete the final steps on OS X for some reason.

  Defaults to `False`.

## Options for epub output

These options influence the epub output. As this builder derives from the HTML builder, the HTML options also apply where appropriate. The actual values for some of the options is not really important, they just have to be entered into the Dublin Core metadata.

`epub_basename`

  The basename for the epub file. It defaults to the `project` name.

`epub_theme`

  The HTML theme for the epub output. Since the default themes are not optimized for small screen space, using the same theme for HTML and epub output is usually not wise. This defaults to `'epub'`, a theme designed to save visual space.

`epub_theme_options`

  A dictionary of options that influence the look and feel of the selected theme. These are theme-specific. For the options understood by the builtin themes, see this section.

  New in version 1.2.

`epub_title`

  The title of the document. It defaults to the `html_title` option but can be set independently for epub creation.

`epub3_description`

  The description of the document. The default value is `''`.

  New in version 1.4.

`epub_author`

  The author of the document. This is put in the Dublin Core metadata. The default value is `'unknown'`.

`epub3_contributor`

  The name of a person, organization, etc. that played a secondary role in the creation of the content of an EPUB Publication. The default value is `'unknown'`.

  New in version 1.4.

`epub_language`

  The language of the document. This is put in the Dublin Core metadata. The default is the `language` option or `'en'` if unset.

`epub_publisher`

  The publisher of the document. This is put in the Dublin Core metadata. You may use any sensible string, e.g. the project homepage. The default value is `'unknown'`.

`epub_copyright`

  The copyright of the document. It defaults to the `copyright` option but can be set independently for epub creation.

`epub_identifier`

  An identifier for the document. This is put in the Dublin Core metadata. For published documents this is the ISBN number, but you can also use an alternative scheme, e.g. the project homepage. The default value is `'unknown'`.

`epub_scheme`

  The publication scheme for the `epub_identifier`. This is put in the Dublin Core metadata. For published books the scheme is `'ISBN'`. If you use the project homepage, `'URL'` seems reasonable. The default value is `'unknown'`.

`epub_uid`

  A unique identifier for the document. This is put in the Dublin Core metadata. You may use a random string. The default value is `'unknown'`.

`epub_cover`

  The cover page information. This is a tuple containing the filenames of the cover image and the html template. The rendered html cover page is inserted as the first item in the spine in `content.opf`. If the template filename is empty, no html cover page is created. No cover at all is created if the tuple is empty. Examples:

      epub_cover = ('_static/cover.png', 'epub-cover.html')
      epub_cover = ('_static/cover.png', '')
      epub_cover = ()

  The default value is `()`.

  New in version 1.1.

`epub_guide`

  Meta data for the guide element of `content.opf`. This is a sequence of tuples containing the type, the uri and the title of the optional guide information. See the OPF documentation at http://idpf.org/epub for details. If possible, default entries for the cover and toc types are automatically inserted. However, the types can be explicitly overwritten if the default entries are not appropriate. Example:

      epub_guide = (('cover', 'cover.html', u'Cover Page'),)

  The default value is `()`.

`epub_pre_files`

  Additional files that should be inserted before the text generated by Sphinx. It is a list of tuples containing the file name and the title. If the title is empty, no entry is added to `toc.ncx`. Example:

      epub_pre_files = [
          ('index.html', 'Welcome'),
      ]

  The default value is `[]`.

`epub_post_files`

  Additional files that should be inserted after the text generated by Sphinx. It is a list of tuples containing the file name and the title. This option can be used to add an appendix. If the title is empty, no entry is added to `toc.ncx`. The default value is `[]`.

`epub_exclude_files`

  A list of files that are generated/copied in the build directory but should not be included in the epub file. The default value is `[]`.

`epub_tocdepth`

  The depth of the table of contents in the file `toc.ncx`. It should be an integer greater than zero. The default value is 3. Note: A deeply nested table of contents may be difficult to navigate.

`epub_tocdup`

  This flag determines if a toc entry is inserted again at the beginning of its nested toc listing. This allows easier navigation to the top of a chapter, but can be confusing because it mixes entries of different depth in one list. The default value is `True`.

`epub_tocscope`

  This setting control the scope of the epub table of contents. The setting can have the following values:

  - `'default'` – include all toc entries that are not hidden (default)
  - `'includehidden'` – include all toc entries

  New in version 1.2.

`epub_fix_images`

  This flag determines if sphinx should try to fix image formats that are not supported by some epub readers. At the moment palette images with a small color table are upgraded. You need the Python Image Library (Pillow the successor of the PIL) installed to use this option. The default value is `False` because the automatic conversion may lose information.

  New in version 1.2.

`epub_max_image_width`

  This option specifies the maximum width of images. If it is set to a value greater than zero, images with a width larger than the given value are scaled accordingly. If it is zero, no scaling is performed. The default value is `0`. You need the Python Image Library (Pillow) installed to use this option.

  New in version 1.2.

`epub_show_urls`

  Control whether to display URL addresses. This is very useful for readers that have no other means to display the linked URL. The settings can have the following values:

  - `'inline'` – display URLs inline in parentheses (default)
  - `'footnote'` – display URLs in footnotes
  - `'no'` – do not display URLs

  The display of inline URLs can be customized by adding CSS rules for the class `link-target`.

  New in version 1.2.

`epub_use_index`

  If true, add an index to the epub document. It defaults to the `html_use_index` option but can be set independently for epub creation.

  New in version 1.2.

`epub3_page_progression_direction`

  The global direction in which the content flows. Allowed values are `'ltr'` (left-to-right), `'rtl'` (right-to-left) and `'default'`. The default value is `'ltr'`.

  When the `'default'` value is specified, the Author is expressing no preference and the Reading System may chose the rendering direction.

  New in version 1.4.

## Options for LaTeX output

These options influence LaTeX output.

`latex_documents`

  This value determines how to group the document tree into LaTeX source files. It must be a list of tuples `(startdocname, targetname, title, author, documentclass, toctree_only)`, where the items are:

  - startdocname: document name that is the “root” of the LaTeX file. All documents referenced by it in TOC trees will be included in the LaTeX file too. (If you want only one LaTeX file, use your `master_doc` here.)
  - targetname: file name of the LaTeX file in the output directory.
  - title: LaTeX document title. Can be empty to use the title of the startdoc. This is inserted as LaTeX markup, so special characters like a backslash or ampersand must be represented by the proper LaTeX commands if they are to be inserted literally.
  - author: Author for the LaTeX document. The same LaTeX markup caveat as for title applies. Use `\and` to separate multiple authors, as in: `'John \and Sarah'`.
  - documentclass: Normally, one of `'manual'` or `'howto'` (provided by Sphinx). Other document classes can be given, but they must include the “sphinx” package in order to define Sphinx’s custom LaTeX commands. “howto” documents will not get appendices. Also, howtos will have a simpler title page.
  - toctree_only: Must be `True` or `False`. If true, the startdoc document itself is not included in the output, only the documents referenced by it via TOC trees. With this option, you can put extra stuff in the master document that shows up in the HTML, but not the LaTeX output.

  New in version 1.2: In the past including your own document class required you to prepend the document class name with the string “sphinx”. This is not necessary anymore.

  New in version 0.3: The 6th item `toctree_only`. Tuples with 5 items are still accepted.

`latex_logo`

  If given, this must be the name of an image file (relative to the configuration directory) that is the logo of the docs. It is placed at the top of the title page. Default: `None`.

`latex_toplevel_sectioning`

  This value determines the topmost sectioning unit. It should be chosen from `part`, `chapter` or `section`. The default is `None`; the topmost sectioning unit is switched by documentclass. `section` is used if documentclass will be `howto`, otherwise `chapter` will be used.

  New in version 1.4.

`latex_use_parts`

  If true, the topmost sectioning unit is parts, else it is chapters. Default: `False`.

  New in version 0.3.

  Deprecated since version 1.4: Use `latex_toplevel_sectioning`.

`latex_appendices`

  A list of document names to append as an appendix to all manuals.

`latex_domain_indices`

  If true, generate domain-specific indices in addition to the general index. For e.g. the Python domain, this is the global module index. Default is `True`.

  This value can be a bool or a list of index names that should be generated, like for `html_domain_indices`.

  New in version 1.0.

`latex_use_modindex`

  If true, add a module index to LaTeX documents. Default is `True`.

  Deprecated since version 1.0: Use `latex_domain_indices`.

`latex_show_pagerefs`

  If true, add page references after internal references. This is very useful for printed copies of the manual. Default is `False`.

  New in version 1.0.

`latex_show_urls`

  Control whether to display URL addresses. This is very useful for printed copies of the manual. The setting can have the following values:

  - `'no'` – do not display URLs (default)
  - `'footnote'` – display URLs in footnotes
  - `'inline'` – display URLs inline in parentheses

  New in version 1.0.

  Changed in version 1.1: This value is now a string; previously it was a boolean value, and a true value selected the `'inline'` display. For backwards compatibility, `True` is still accepted.

`latex_elements`

  New in version 0.5.

  A dictionary that contains LaTeX snippets that override those Sphinx usually puts into the generated `.tex` files.

  Keep in mind that backslashes must be doubled in Python string literals to avoid interpretation as escape sequences.

  - Keys that you may want to override include:

    `'papersize'`

      Paper size option of the document class (`'a4paper'` or `'letterpaper'`), default `'letterpaper'`.

    `'pointsize'`

      Point size option of the document class (`'10pt'`, `'11pt'` or `'12pt'`), default `'10pt'`.

    `'babel'`

      “babel” package inclusion, default `'\\usepackage{babel}'`.

    `'fontpkg'`

      Font package inclusion, default `'\\usepackage{times}'` (which uses Times and Helvetica). You can set this to `''` to use the Computer Modern fonts.

      Changed in version 1.2: Defaults to `''` when the `language` uses the Cyrillic script.

    `'fncychap'`

      Inclusion of the “fncychap” package (which makes fancy chapter titles), default `'\\usepackage[Bjarne]{fncychap}'` for English documentation, `'\\usepackage[Sonny]{fncychap}'` for internationalized docs (because the “Bjarne” style uses numbers spelled out in English). Other “fncychap” styles you can try include “Lenny”, “Glenn”, “Conny” and “Rejne”. You can also set this to `''` to disable fncychap.

    `'passoptionstopackages'`

      “PassOptionsToPackage” call, default empty.

      New in version 1.4.

    `'preamble'`

      Additional preamble content, default empty.

    `'figure_align'`

      Latex figure float alignment, default ‘htbp’ (here, top, bottom, page). Whenever an image doesn’t fit into the current page, it will be ‘floated’ into the next page but may be preceded by any other text. If you don’t like this behavior, use ‘H’ which will disable floating and position figures strictly in the order they appear in the source.

      New in version 1.3.

    `'footer'`

      Additional footer content (before the indices), default empty.

  - Keys that don’t need be overridden unless in special cases are:

    `'inputenc'`

      “inputenc” package inclusion, default `'\\usepackage[utf8]{inputenc}'`.

    `'cmappkg'`

      “cmap” package inclusion, default `'\\usepackage{cmap}'`.

      New in version 1.2.

    `'fontenc'`

      “fontenc” package inclusion, default `'\\usepackage[T1]{fontenc}'`.

    `'maketitle'`

      “maketitle” call, default `'\\maketitle'`. Override if you want to generate a differently-styled title page.

    `'releasename'`

      value that prefixes `'release'` element on title page, default `'Release'`.

    `'tableofcontents'`

      “tableofcontents” call, default `'\\tableofcontents'`. Override if you want to generate a different table of contents or put content between the title page and the TOC.

    `'transition'`

      Commands used to display transitions, default `'\n\n\\bigskip\\hrule{}\\bigskip\n\n'`. Override if you want to display transitions differently.

      New in version 1.2.

    `'printindex'`

      “printindex” call, the last thing in the file, default `'\\printindex'`. Override if you want to generate the index differently or append some content after the index.

  - Keys that are set by other options and therefore should not be overridden are:

    `'docclass'` `'classoptions'` `'title'` `'date'` `'release'` `'author'` `'logo'` `'makeindex'` `'shorthandoff'`

`latex_docclass`

  A dictionary mapping `'howto'` and `'manual'` to names of real document classes that will be used as the base for the two Sphinx classes. Default is to use `'article'` for `'howto'` and `'report'` for `'manual'`.

  New in version 1.0.

`latex_additional_files`

  A list of file names, relative to the configuration directory, to copy to the build directory when building LaTeX output. This is useful to copy files that Sphinx doesn’t copy automatically, e.g. if they are referenced in custom LaTeX added in `latex_elements`. Image files that are referenced in source files (e.g. via `.. image::`) are copied automatically.

  You have to make sure yourself that the filenames don’t collide with those of any automatically copied files.

  New in version 0.6.

  Changed in version 1.2: This overrides the files which is provided from Sphinx such as sphinx.sty.

`latex_preamble`

  Additional LaTeX markup for the preamble.

  Deprecated since version 0.5: Use the `'preamble'` key in the `latex_elements` value.

`latex_paper_size`

  The output paper size (`'letter'` or `'a4'`). Default is `'letter'`.

  Deprecated since version 0.5: Use the `'papersize'` key in the `latex_elements` value.

`latex_font_size`

  The font size (‘10pt’, ‘11pt’ or ‘12pt’). Default is `'10pt'`.

  Deprecated since version 0.5: Use the `'pointsize'` key in the `latex_elements` value.

## Options for text output

These options influence text output.

`text_newlines`

  Determines which end-of-line character(s) are used in text output.

  - `'unix'`: use Unix-style line endings (`\n`)
  - `'windows'`: use Windows-style line endings (`\r\n`)
  - `'native'`: use the line ending style of the platform the documentation is built on

  Default: `'unix'`.

  New in version 1.1.

`text_sectionchars`

  A string of 7 characters that should be used for underlining sections. The first character is used for first-level headings, the second for second-level headings and so on.

  The default is `'*=-~"+`'`.

  New in version 1.1.

## Options for manual page output

These options influence manual page output.

`man_pages`

  This value determines how to group the document tree into manual pages. It must be a list of tuples `(startdocname, name, description, authors, section)`, where the items are:

  - startdocname: document name that is the “root” of the manual page. All documents referenced by it in TOC trees will be included in the manual file too. (If you want one master manual page, use your `master_doc` here.)
  - name: name of the manual page. This should be a short string without spaces or special characters. It is used to determine the file name as well as the name of the manual page (in the NAME section).
  - description: description of the manual page. This is used in the NAME section.
  - authors: A list of strings with authors, or a single string. Can be an empty string or list if you do not want to automatically generate an AUTHORS section in the manual page.
  - section: The manual page section. Used for the output file name as well as in the manual page header.

  New in version 1.0.

`man_show_urls`

  If true, add URL addresses after links. Default is `False`.

  New in version 1.1.

## Options for Texinfo output

These options influence Texinfo output.

`texinfo_documents`

  This value determines how to group the document tree into Texinfo source files. It must be a list of tuples `(startdocname, targetname, title, author, dir_entry, description, category, toctree_only)`, where the items are:

  - startdocname: document name that is the “root” of the Texinfo file. All documents referenced by it in TOC trees will be included in the Texinfo file too. (If you want only one Texinfo file, use your `master_doc` here.)
  - targetname: file name (no extension) of the Texinfo file in the output directory.
  - title: Texinfo document title. Can be empty to use the title of the startdoc. Inserted as Texinfo markup, so special characters like @ and {} will need to be escaped to be inserted literally.
  - author: Author for the Texinfo document. Inserted as Texinfo markup. Use `@*` to separate multiple authors, as in: `'John@*Sarah'`.
  - dir_entry: The name that will appear in the top-level `DIR` menu file.
  - description: Descriptive text to appear in the top-level `DIR` menu file.
  - category: Specifies the section which this entry will appear in the top-level `DIR` menu file.
  - toctree_only: Must be `True` or `False`. If true, the startdoc document itself is not included in the output, only the documents referenced by it via TOC trees. With this option, you can put extra stuff in the master document that shows up in the HTML, but not the Texinfo output.

  New in version 1.1.

`texinfo_appendices`

  A list of document names to append as an appendix to all manuals.

  New in version 1.1.

`texinfo_domain_indices`

  If true, generate domain-specific indices in addition to the general index. For e.g. the Python domain, this is the global module index. Default is `True`.

  This value can be a bool or a list of index names that should be generated, like for `html_domain_indices`.

  New in version 1.1.

`texinfo_show_urls`

  Control how to display URL addresses.

  - `'footnote'` – display URLs in footnotes (default)
  - `'no'` – do not display URLs
  - `'inline'` – display URLs inline in parentheses

  New in version 1.1.

`texinfo_no_detailmenu`

  If true, do not generate a `@detailmenu` in the “Top” node’s menu containing entries for each sub-node in the document. Default is `False`.

  New in version 1.2.

`texinfo_elements`

  A dictionary that contains Texinfo snippets that override those Sphinx usually puts into the generated `.texi` files.

  - Keys that you may want to override include:

    `'paragraphindent'`

      Number of spaces to indent the first line of each paragraph, default `2`. Specify `0` for no indentation.

    `'exampleindent'`

      Number of spaces to indent the lines for examples or literal blocks, default `4`. Specify `0` for no indentation.

    `'preamble'`

      Texinfo markup inserted near the beginning of the file.

    `'copying'`

      Texinfo markup inserted within the `@copying` block and displayed after the title. The default value consists of a simple title page identifying the project.

  - Keys that are set by other options and therefore should not be overridden are:

    `'author'` `'body'` `'date'` `'direntry'` `'filename'` `'project'` `'release'` `'title'`

  New in version 1.1.

## Options for the linkcheck builder

`linkcheck_ignore`

  A list of regular expressions that match URIs that should not be checked when doing a `linkcheck` build. Example:

      linkcheck_ignore = [r'http://localhost:\d+/']

  New in version 1.1.

`linkcheck_retries`

  The number of times the linkcheck builder will attempt to check a URL before declaring it broken. Defaults to 1 attempt.

  New in version 1.4.

`linkcheck_timeout`

  A timeout value, in seconds, for the linkcheck builder. Only works in Python 2.6 and higher. The default is to use Python’s global socket timeout.

  New in version 1.1.

`linkcheck_workers`

  The number of worker threads to use when checking links. Default is 5 threads.

  New in version 1.1.

`linkcheck_anchors`

  If true, check the validity of `#anchor`s in links. Since this requires downloading the whole document, it’s considerably slower when enabled. Default is `True`.

  New in version 1.2.

## Options for the XML builder

`xml_pretty`

  If true, pretty-print the XML. Default is `True`.

  New in version 1.2.

Footnotes

[1] | (1, 2) A note on available globbing syntax: you can use the standard shell constructs `*`, `?`, `[...]` and `[!...]` with the feature that these all don’t match slashes. A double star `**` can be used to match any sequence of characters including slashes.