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Thin wrapper for pandoc.

Project description

# pypandoc

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[![PyPI version](](
[![conda version](](

pypandoc provides a thin wrapper for [pandoc](, a universal
document converter.

## Installation

pypandoc uses `pandoc`, so it needs an available installation of `pandoc`. For some common cases
(wheels, conda packages), pypandoc already includes `pandoc` (and `pandoc_citeproc`) in it's
prebuilt package.

If `pandoc` is already installed (`pandoc` is in the PATH), `pypandoc` uses the version with the
higher version number and if both are the same, the already installed version. See [Specifying the location of pandoc binaries](#specifying_binaries) for more.

To use `pandoc` filters, you must have the relevant filter installed on your machine.

### Installing via pip

Install via `pip install pypandoc`.

Prebuilt [wheels for Windows and Mac OS X]( include
pandoc. If there is no prebuilt binary available, you have to
[install `pandoc` yourself](#installing-pandoc-manually).

If you use Linux and have [your own wheelhouse](,
you can build a wheel which include `pandoc` with
`python download_pandoc; python bdist_wheel`. Be aware that this works only
on 64bit intel systems, as we only download it from the
[official source](

### Installing via conda

`pypandoc` is included in [conda-forge]( The conda packages will
also install the `pandoc` package, so `pandoc` is available in the installation.

Install via `conda install -c conda-forge pypandoc`.

You can also add the channel to your conda config via
`conda config --add channels conda-forge`. This makes it possible to
use `conda install pypandoc` directly and also lets you update via `conda update pypandoc`.

### Installing pandoc

If you don't get `pandoc` installed via a prebuild wheel which includes `pandoc` or via the
conda package dependencies, you need to install `pandoc` by yourself.

#### Installing pandoc via pypandoc

Installing via pypandoc is possible on Windows, Mac OS X or Linux (Intel-based):

# expects a installed pypandoc: pip install pypandoc
from pypandoc.pandoc_download import download_pandoc
# see the documentation how to customize the installation path
# but be aware that you then need to include it in the PATH

The default install location is included in the search path for `pandoc`, so you
don't need to add it to `PATH`.

#### Installing pandoc manually

Installing manually via the system mechanism is also possible. Such installation mechanism
make `pandoc` available on many more platforms:

- Ubuntu/Debian: `sudo apt-get install pandoc`
- Fedora/Red Hat: `sudo yum install pandoc`
- Arch: `sudo pacman -S pandoc`
- Mac OS X with Homebrew: `brew install pandoc pandoc-citeproc Caskroom/cask/mactex`
- Machine with Haskell: `cabal-install pandoc`
- Windows: There is an installer available
- [FreeBSD port](
- Or see

Be aware that not all install mechanismen put `pandoc` in `PATH`, so you either
have to change `PATH` yourself or set the full path to `pandoc` in
`PYPANDOC_PANDOC`. See the next section for more information.

### <a name="specifying_binaries"></a>Specifying the location of pandoc binaries

You can point to a specific pandoc version by setting the environment variable
`PYPANDOC_PANDOC` to the full path to the pandoc binary
(`PYPANDOC_PANDOC=/home/x/whatever/pandoc` or `PYPANDOC_PANDOC=c:\pandoc\pandoc.exe`).
If this environment variable is set, this is the only place where pandoc is searched for.

In certain cases, e.g. pandoc is installed but a web server with its own user
cannot find the binaries, it is useful to specify the location at runtime:

import os
os.environ.setdefault('PYPANDOC_PANDOC', '/home/x/whatever/pandoc')

## Usage

There are two basic ways to use `pypandoc`: with input files or with input

import pypandoc

# With an input file: it will infer the input format from the filename
output = pypandoc.convert_file('', 'rst')

# ...but you can overwrite the format via the `format` argument:
output = pypandoc.convert_file('somefile.txt', 'rst', format='md')

# alternatively you could just pass some string. In this case you need to
# define the input format:
output = pypandoc.convert_text('#some title', 'rst', format='md')
# output == 'some title\r\n==========\r\n\r\n'

`convert_text` expects this string to be unicode or utf-8 encoded bytes. `convert_*` will always
return a unicode string.

It's also possible to directly let `pandoc` write the output to a file. This is the only way to
convert to some output formats (e.g. odt, docx, epub, epub3, pdf). In that case `convert_*()` will
return an empty string.

import pypandoc

output = pypandoc.convert_file('', 'docx', outputfile="somefile.docx")
assert output == ""

In addition to `format`, it is possible to pass `extra_args`.
That makes it possible to access various `pandoc` options easily.

output = pypandoc.convert_text(
'<h1>Primary Heading</h1>',
'md', format='html',
# output == '# Primary Heading\r\n'
output = pypandoc.convert(
'# Primary Heading',
'html', format='md',
# output == '<h2 id="primary-heading">Primary Heading</h2>\r\n'
pypandoc now supports easy addition of
[pandoc filters](

filters = ['pandoc-citeproc']
pdoc_args = ['--mathjax',
output = pd.convert_file(source=filename,
Please pass any filters in as a list and not as a string.

Please refer to `pandoc -h` and the
[official documentation]( for further details.

> Note: the old way of using `convert(input, output)` is deprecated as in some cases it wasn't
possible to determine whether the input should be used as a filename or as text.

## Dealing with Formatting Arguments

Pandoc supports custom formatting though `-V` parameter. In order to use it through
pypandoc, use code such as this:

output = pypandoc.convert_file('', 'pdf', outputfile='demo.pdf',
extra_args=['-V', 'geometry:margin=1.5cm'])

> Note: it's important to separate `-V` and its argument within a list like that or else
it won't work. This gotcha has to do with the way
[`subprocess.Popen`]( works.

## Getting Pandoc Version

As it can be useful sometimes to check what Pandoc version is available at your system or which
particular `pandoc` binary is used by `pypandoc`. For that, `pypandoc` provides the following
utility functions. Example:


## Related

* [pydocverter]( is a client for a service called
[Docverter](, which offers `pandoc` as a service (plus some extra goodies).
* See [pyandoc]( for an alternative implementation of a `pandoc`
wrapper from Kenneth Reitz. This one hasn't been active in a while though.

## Contributing

Contributions are welcome. When opening a PR, please keep the following guidelines in mind:

1. Before implementing, please open an issue for discussion.
2. Make sure you have tests for the new logic.
3. Make sure your code passes `flake8 pypandoc/*.py`
4. Add yourself to contributors at `` unless you are already there. In that case tweak your contributions.

Note that for citeproc tests to pass you'll need to have [pandoc-citeproc]( installed. If you installed a prebuilt wheel or conda package, it is already included.

## Contributors

* [Valentin Haenel]( - String conversion fix
* [Daniel Sanchez]( - Automatic parsing of input/output formats
* [Thomas G.]( - Python 3 support
* [Ben Jao Ming]( - Fail gracefully if `pandoc` is missing
* [Ross Crawford-d'Heureuse]( - Encode input in UTF-8 and add Django
* [Michael Chow]( - Decode output in UTF-8
* [Janusz Skonieczny]( - Support Windows newlines and allow encoding to
be specified.
* [gabeos]( - Fix help parsing
* [Marc Abramowitz]( - Make `` fail hard if `pandoc` is
missing, Travis, Dockerfile, PyPI badge, Tox, PEP-8, improved documentation
* [Daniel L.]( - Add `extra_args` example to README
* [Amy Guy]( - Exception handling for unicode errors
* [Florian Eßer]( - Allow Markdown extensions in output format
* [Philipp Wendler]( - Allow Markdown extensions in input format
* [Jan Schulz]( - Handling output to a file, Travis to work on newer version of Pandoc, return code checking, get_pandoc_version. Helped to fix the Travis build, new `convert_*` API
* [Aaron Gonzales]( - Added better filter handling
* [David Lukes]( - Enabled input from non-plain-text files and made sure tests clean up template files correctly if they fail
* [valholl]( - Set up licensing information correctly and include examples to distribution version
* [Cyrille Rossant]( - Fixed bug by trimming out stars in the list of `pandoc` formats. Helped to fix the Travis build.
* [Paul Osborne]( - Don't require `pandoc` to install pypandoc.
* [Felix Yan]( - Added installation instructions for Arch Linux.

## License

`pypandoc` is available under MIT license. See LICENSE for more details. `pandoc` itself is [available under the GPL2 license](

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