cython-simple-examples
Extremely simple Cython examples.
From test2 to test4, we show how to "cythonize" a Python code sample.
pip install cython
make test
Typical results:
time python test2.pyx
4999999950000000
3.84 real 3.82 user 0.01 sys
time python -c "import test2"
4999999950000000
real 0m2.368s
user 0m2.345s
sys 0m0.017s
time python -c "import test3"
4999999950000000
real 0m2.872s
user 0m2.849s
sys 0m0.016s
time python -c "import test4"
4999999950000000
real 0m0.037s
user 0m0.013s
sys 0m0.017s
As you can see in test4.html, declaring a type for both a and i makes Cython translate most of the code to pure C, which produces a ~100x speedup!