Benchmark using Fibonacci numbers with Python, Cython and PyPy.

benchmark_fib.sh

#!/usr/bin/env bash

echo "Benchmark for Fibonacci numbers with Python3, Cython and PyPy"

echo '
def fib(n):
    "Return the n-th Fibonacci number."
    i = 0
    a, b = 0, 1
    if n < 2:
        return [a, b][n]
    while i < n:
        a, b = b, a + b
        i += 1
    return a
' > pyfib.py

set -o xtrace

cat pyfib.py
cp pyfib.py cyfib.pyx

NUM=100000

python --version
python -m timeit -s "import pyfib" "pyfib.fib($NUM)"

python -c "import cython; print('Cython: %s' % cython.__version__)"
python -m timeit -s "import pyximport; pyximport.install(); import cyfib; import warnings; warnings.filterwarnings('ignore')" "cyfib.fib($NUM)"

pypy --version
pypy -m timeit -s "import pyfib" "pyfib.fib($NUM)"

set +o xtrace