At the core of deep learning systems are multidimensional numeric arrays and matrices. The input data, the layers of neurons in the application, and the output data all come in arrays of various forms. Python (and specifically the numpy package) provides ways to examine and debug these arrays.
There have been periodic requests logged in this site’s HTTP access logs that request a PHP page (usually simply index.php) and attempt to pass parameters like “die(md5(34563))” or “die(pi()*42)”. These extra parameters don’t seem to have any effect on the site, but I’m still curious about what the intent of these requests might be.