Run Black on Python code blocks in documentation files.
Project description
Run Black on Python code blocks in documentation files.
Installation
Use pip:
python -m pip install blacken-docsPython 3.8 to 3.12 supported.
Black 22.1.0+ supported.
pre-commit hook
You can also install blacken-docs as a pre-commit hook. Add the following to the repos section of your .pre-commit-config.yaml file (docs):
- repo: https://github.com/adamchainz/blacken-docs
rev: "" # replace with latest tag on GitHub
hooks:
- id: blacken-docs
additional_dependencies:
- black==22.12.0Then, reformat your entire project:
pre-commit run blacken-docs --all-filesSince Black is a moving target, it’s best to pin it in additional_dependencies. Upgrade as appropriate.
Usage
blacken-docs is a command line tool that rewrites documentation files in place. It supports Markdown, reStructuredText, and LaTex files. Additionally, you can run it on Python files to reformat Markdown and reStructuredText within docstrings.
Run blacken-docs with the filenames to rewrite:
blacken-docs README.rstIf any file is modified, blacken-docs exits nonzero.
blacken-docs does not have any ability to recurse through directories. Use the pre-commit integration, globbing, or another technique for applying to many files. For example, with git ls-files | xargs:
git ls-files -z -- '*.md' | xargs -0 blacken-docs…or PowerShell’s ForEach-Object:
git ls-files -- '*.md' | %{blacken-docs $_}blacken-docs currently passes the following options through to Black:
It also has the below extra options:
-E / --skip-errors - Don’t exit non-zero for errors from Black (normally syntax errors).
--rst-literal-blocks - Also format literal blocks in reStructuredText files (more below).
History
blacken-docs was created by Anthony Sottile in 2018. At the end of 2022, Adam Johnson took over maintenance.
Supported code block formats
blacken-docs formats code blocks matching the following patterns.
Markdown
In “python” blocks:
```python
def hello():
print("hello world")
```And “pycon” blocks:
```pycon
>>> def hello():
... print("hello world")
...
```Within Python files, docstrings that contain Markdown code blocks may be reformatted:
def f():
"""docstring here
```python
print("hello world")
```
"""reStructuredText
In “python” blocks:
.. code-block:: python
def hello():
print("hello world")In “pycon” blocks:
.. code-block:: pycon
>>> def hello():
... print("hello world")
...Use --rst-literal-blocks to also format literal blocks:
An example::
def hello():
print("hello world")Literal blocks are marked with :: and can be any monospaced text by default. However Sphinx interprets them as Python code by default. If your project uses Sphinx and such a configuration, add --rst-literal-blocks to also format such blocks.
Within Python files, docstrings that contain reStructuredText code blocks may be reformatted:
def f():
"""docstring here
.. code-block:: python
print("hello world")
"""LaTeX
In minted “python” blocks:
\begin{minted}{python}
def hello():
print("hello world")
\end{minted}In minted “pycon” blocks:
\begin{minted}{pycon}
>>> def hello():
... print("hello world")
...
\end{minted}In PythonTeX blocks:
\begin{pycode}
def hello():
print("hello world")
\end{pycode}Release history Release notifications | RSS feed
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