Go beyond the basics by screening for custom financial metrics. This isn’t your mothers financial analysis guide. (more…)

Python’s context managers are great for resource management and stopping the propagation of leaked abstractions. You’ve probably used it while opening a file or a database connection. Usually it starts with a with statement like this: (more…)

Example based guide to mastering Python regular expressions... (more…)

This should have been obvious to me for a longer time, but until earlier today I did not really realize the severity of the issues caused by str.format on untrusted user input. It came up as a way to bypass the Jinja2 Sandbox in a way that would permit r...

Clustering or cluster analysis is an unsupervised learning problem. It is often used as a data analysis technique for discovering […]... (more…)