Advanced Python Programming

Profiling Cython

Cython provides a feature, called annotated view, that helps find which lines are executed in the Python interpreter and which are good candidates for ulterior optimizations. We can turn this feature on by compiling a Cython file with the -a option. In this way, Cython will generate an HTML file containing our code annotated with some useful information. The usage of the -a option is as follows:

$ cython -a cevolve.pyx$ firefox cevolve.html

The HTML file displayed in the following screenshot shows our Cython file line by line:

Each line in the source code can appear in different shades of yellow. A more intense color corresponds ...