CLPython is an open-source implementation of Python written in Common Lisp. With CLPython you can run Python programs in a Lisp environment. Libraries written in Lisp are available to Python code, and Python libraries can be accessed by Lisp code. Also Python and Lisp code can be mixed.

For rough documentation, please see the Introduction and Manual on common-lisp.net.

To install using QuickLisp: (ql:quickload "clpython") (require ASDF 3.3 or higher).

CLPython is developed by Willem Broekema and is released as open source under the LLGPL. The project was started in 2006, and is since 2013 not under active development anymore.

See the build status on Travis-CI, and the coverage status on Coveralls:

Common Lisp Implementation	Build + Test Status
ABCL 1.5.0		Fails due to ClassCastException: StandardObject cannot be cast to LispClass
Allegro CL 10.1
Clozure CL 1.11
CLISP 2.49		Fails due to stack overflow
CMUCL	?
ECL 16.1.3
LispWorks 6.1.1	✅	Manually verified
SBCL 1.5.4