Building Cython code
Using the Jupyter notebook
Cython can be used conveniently and interactively from a web browser through the Jupyter notebook. To install Jupyter notebook, e.g. into a virtualenv, use pip:
(venv)$ pip install jupyter
(venv)$ jupyter notebook
To enable support for Cython compilation, install Cython as described in the installation guide and load the Cython
extension from within the Jupyter notebook:
%load_ext Cython
Then, prefix a cell with the %%cython
marker to compile it:
%%cython
cdef int a = 0
for i in range(10):
a += i
print(a)
You can show Cython’s code analysis by passing the --annotate
option:
%%cython --annotate
...