ref: 3fb5812a59f3dc9ac1a28e385f813ecb03de3bbe
dir: /python/README.md/
Python aubio module
===================
This module wraps the aubio library for Python using the numpy module.
Using the Python aubio module
-----------------------------
After installing python-aubio, you will be able to import the aubio module:
$ python
[...]
>>> import aubio
>>> help(aubio.miditofreq)
Finding some inspiration
------------------------
Some examples are available in the `python/demos` directory. These scripts are
small programs written in python and using python-aubio.
For instance, `demo_source.py` reads a media file.
$ ./python/demos/demo_source.py /path/to/sound/sample.wav
and `demo_timestretch_online.py` stretches the original file into a new one:
$ ./python/demo/demo_timestretch_online.py loop.wav stretched_loop.wav 0.92`
Note: you might need to install additional modules to run some of the demos.
Some demos use [matplotlib](http://matplotlib.org/) to draw plots, others use
[PySoundCard](https://github.com/bastibe/PySoundCard) to play and record
sounds.
Testing the Python module
-------------------------
Python tests are in `python/tests` and use the [nose2 python package][nose2].
To run the all the python tests, use the script:
$ ./python/tests/run_all_tests
Each test script can also be called one at a time. For instance:
$ ./python/tests/test_note2midi.py -v
[nose2]: https://github.com/nose-devs/nose2
Install in a virtualenv
-----------------------
You should be able to install python-aubio directly from the top source
directory of aubio.
First, create a virtualenv to hold the required python module:
$ virtualenv pyaubio
$ source pyaubio/bin/activate
Now install and build the python extension using:
$ pip install .
Install requirements
--------------------
Before compiling this module, you must have compiled libaubio.
A simple way to do this is with pip:
$ pip install -r requirements.txt
For more information about how this module works, please refer to the [Python/C
API Reference Manual] (http://docs.python.org/c-api/index.html) and the
[Numpy/C API Reference](http://docs.scipy.org/doc/numpy/reference/c-api.html).
Compiling python aubio
----------------------
To build the aubio Python module, run the following command from the top source
directory of aubio:
$ ./setup.py build
Note: if libaubio was previously built using waf, the script will use it.
Otherwise, the entire library will be built inside the python extension.
To find out more about `setup.py` options:
$ ./setup.py --help
Installing
----------
To install the Python module:
$ ./setup.py install
Alternatively, you may want to use the Python module without installing it by
setting your PYTHONPATH, for instance as follows:
$ export PYTHONPATH=$PYTHONPATH:$PWD/`ls -rtd build/lib.* | head -1`:$PWD/tests