1. Mike Miller
  2. pytave



Octave Python Interface

This project is for development of a native Python calling interface for GNU Octave.


The goals of this extension include

  • call any loadable Python modules, classes, and functions
  • automatic translation of certain Octave data types into Python arguments
  • hold reference to and performing operations on any Python data type as Octave variables
  • automatic translation of certain Python data types into Octave return values
  • be as compatible as possible with Matlab's own Python calling interface


A few examples are listed here to give a brief introduction to how the Python runtime is translated to Octave.

Add a directory to the Python module search path

py.sys.path.insert (int32 (0), "/path/to/module");

Use a vectorized NumPy function

x = py.numpy.sqrt (1:10);

Call a function with keyword arguments

a = py.int ("5ba0", pyargs ("base", int32 (16)));

Read an entire text file into a string

s = py.str ().join (py.open ("/etc/passwd").readlines ());


There is currently no support for installing this project as an Octave package or in a system or user directory for regular use. This is intentional, since the project is still being developed and is not stable enough for actual use yet.

What is supported is building and running the project from the build directory. Building requires Octave and Python development libraries and GNU autotools.

  1. hg clone https://bitbucket.org/mtmiller/pytave
  2. cd pytave
  3. autoreconf -i
  4. ./configure
  5. make
  6. Run Octave with the build directory added to the load path


We welcome all contributors, bug reports, test results, and ideas for improvement. Contributions in any of the following forms, in no particular order, are needed and appreciated.

  • Testing on different operating systems and in different environments
  • Testing for full functionality with a variety of Python libraries
  • Bug reports detailing problems encountered or unexpected behavior
  • Code contributions
  • Documentation in the form of examples, improvements to help texts, or some sort of user manual

Other Resources

Please discuss or ask questions about this project on the Octave maintainers mailing list.

The wiki page contains more examples and ideas about the project.