Picon is a Python-to-Cython tool. It aims to produce cython code as close as possible to the original python code. It supports versions 2.x and 3.x of Python.

• Glasgow Haskell Compiler 8.0.2 or later.
• Cabal 1.10 or later.

git clone [email protected]:fische/picon.git
cd picon/
cabal install

picon - a Python-to-Cython tool

Usage: picon [-o|--output TARGET_DIR] ([-2] | [-3]) FILE
  Convert python code from FILE to cython code

Available options:
  -o,--output TARGET_DIR   Target directory where to write translated files
  -2                       Enable Python version 2 parsing
  -3                       Enable Python version 3 parsing
  -h,--help                Show this help text

Write your python code:

def fib(n):
    if n < 2:
        return n
    return fib(n-2) + fib(n-1)

fib(30)

Convert it to cython code:

picon /path/to/your/file.py

Picon will generate the cython code at /path/to/your/file.pyx:

cdef int fib(int n):
    if n < 2:
        return n
    return fib(n - 2) + fib(n - 1)
fib(30)

The following list provide the current limitations of picon. This does not mean they won't be supported in the future.

• Modules.
• Built-in such as print, range, str, etc. Any variable that have not been declared in the current module.
• List, dict and tuple.
• C type semantic (overflows, etc).
• Variables holding multiple types.
• Function pointers.
• Special methods such as __init__, __str__, __radd__, etc.
• Nested functions.
• Exceptions.