Usage¤

Installation¤

You can install this handler as a mkdocstrings extra:

# PEP 621 dependencies declaration
# adapt to your dependencies manager
[project]
dependencies = [
    "mkdocstrings[python]>=0.18",
]

You can also explicitly depend on the handler:

# PEP 621 dependencies declaration
# adapt to your dependencies manager
[project]
dependencies = [
    "mkdocstrings-python",
]

The Python handler is the default mkdocstrings handler. You can change the default handler, or explicitely set the Python handler as default by defining the default_handler configuration option of mkdocstrings in mkdocs.yml:

plugins:
- mkdocstrings:
    default_handler: python

Injecting documentation¤

With the Python handler installed and configured as default handler, you can inject documentation for a module, class, function, or any other Python object with mkdocstrings' autodoc syntax, in your Markdown pages:

::: path.to.object

If another handler was defined as default handler, you can explicitely ask for the Python handler to be used when injecting documentation with the handler option:

::: path.to.object
    handler: python

Configuration¤

When installed, the Python handler becomes the default mkdocstrings handler. You can configure it in mkdocs.yml:

plugins:
- mkdocstrings:
    handlers:
      python:
        ...  # the Python handler configuration

Global-only options¤

Some options are global only, and go directly under the handler's name.

inventories¤

This option is used to load Sphinx-compatible objects inventories from other documentation sites. For example, you can load the standard library objects inventory like this:

plugins:
- mkdocstrings:
    handlers:
      python:
        import:
        - https://docs.python-requests.org/en/master/objects.inv

When loading an inventory, you enable automatic cross-references to other documentation sites like the standard library docs or any third-party package docs. Typically, you want to load the inventories of your project's dependencies, at least those that are used in the public API.

See mkdocstrings' documentation on inventories for more details.

Additionally, the Python handler accepts a domains option in the inventory options, which allows to select the inventory domains to load. By default the Python handler only selects the py domain (for Python objects). You might find useful to also enable the std domain:

plugins:
- mkdocstrings:
    handlers:
      python:
        inventories:
        - url: https://docs.python-requests.org/en/master/objects.inv
          domains: [std, py]

load_external_modules¤

This option allows resolving aliases (imports) to any external module. Modules are considered external when they are not part of the package your are injecting documentation for. Setting this option to True will tell the handler to resolve aliases recursively when they are made public through the __all__ variable. By default, the handler will only resolve aliases when they point at a private sibling of the source package, for example aliases going from ast to _ast. Set load_external_modules to False to prevent even that.

Example:

plugins:
- mkdocstrings:
    handlers:
      python:
        load_external_modules: true

locale¤

The locale to use when translating template strings. The translation system is not fully ready yet, so we don't recommend setting the option for now.

paths¤

This option is used to provide filesystem paths in which to search for Python modules. Non-absolute paths are computed as relative to MkDocs configuration file. Example:

plugins:
- mkdocstrings:
    handlers:
      python:
        paths: [src]  # search packages in the src folder

More details at Finding modules.

Global/local options¤

The other options can be used both globally and locally, under the options key. For example, globally:

plugins:
- mkdocstrings:
    handlers:
      python:
        options:
          do_something: true

...and locally, overriding the global configuration:

::: package.module.class
    options:
      do_something: false

These options affect how the documentation is collected from sources and rendered. See the following tables summarizing the options, and get more details for each option in the following pages:

• General options: various options that do not fit in the other categories
• Headings options: options related to headings and the table of contents (or sidebar, depending on the theme used)
• Members options: options related to filtering or ordering members in the generated documentation
• Docstrings options: options related to docstrings (parsing and rendering)
• Signature options: options related to signatures and type annotations

Finding modules¤

There are multiple ways to tell the handler where to find your packages/modules.

The recommended method is to use the paths option, as it's the only one that works with the -f option of MkDocs, allowing to build the documentation from any location on the file system. Indeed, the paths provided with the paths option are computed as relative to the configuration file (mkdocs.yml), so that the current working directory has no impact on the build process: you can build the docs from any location on your filesystem.

Using the paths option¤

1. mkdocs.yml in root, package in root

   📁 root/
   ├──  mkdocs.yml
   └── 📁 package/
   

   mkdocs.yml

   plugins:
   - mkdocstrings:
       handlers:
         python:
           paths: [.]  # actually not needed, default
   

2. mkdocs.yml in root, package in subfolder

   📁 root/
   ├──  mkdocs.yml
   └── 📁 src/
       └── 📁 package/
   

   mkdocs.yml

   plugins:
   - mkdocstrings:
       handlers:
         python:
           paths: [src]
   

3. mkdocs.yml in subfolder, package in root

   📁 root/
   ├── 📁 docs/
   │   └──  mkdocs.yml
   └── 📁 package/
   

   mkdocs.yml

   plugins:
   - mkdocstrings:
       handlers:
         python:
           paths: [..]
   

4. mkdocs.yml in subfolder, package in subfolder

   📁 root/
   ├── 📁 docs/
   │   └──  mkdocs.yml
   └── 📁 src/
       └── 📁 package/
   

   mkdocs.yml

   plugins:
   - mkdocstrings:
       handlers:
         python:
           paths: [../src]
   

Except for case 1, which is supported by default, we strongly recommend setting the path to your packages using this option, even if it works without it (for example because your project manager automatically adds src to PYTHONPATH), to make sure anyone can build your docs from any location on their filesystem.

Using the PYTHONPATH environment variable¤

You can take advantage of the usual Python loading mechanisms. In Bash and other shells, you can run your command like this (note the prepended PYTHONPATH=...):

1. mkdocs.yml in root, package in root

   📁 root/
   ├──  mkdocs.yml
   └── 📁 package/
   

   PYTHONPATH=. mkdocs build  # actually not needed, default
   

2. mkdocs.yml in root, package in subfolder

   📁 root/
   ├──  mkdocs.yml
   └── 📁 src/
       └── 📁 package/
   

   PYTHONPATH=src mkdocs build
   

3. mkdocs.yml in subfolder, package in root

   📁 root/
   ├── 📁 docs/
   │   └──  mkdocs.yml
   └── 📁 package/
   

   PYTHONPATH=. mkdocs build -f docs/mkdocs.yml
   

4. mkdocs.yml in subfolder, package in subfolder

   📁 root/
   ├── 📁 docs/
   │   └──  mkdocs.yml
   └── 📁 src/
       └── 📁 package/
   

   PYTHONPATH=src mkdocs build -f docs/mkdocs.yml
   

Installing your package in the current Python environment¤

Install your package in the current environment, and run MkDocs:

. venv/bin/activate
pip install -e .
mkdocs build

pdm install
pdm run mkdocs build

poetry install
poetry run mkdocs build