Backtests often look far better on paper than they do in live markets. The usual reason is not that the idea was completely wrong. It is that the strategy was tuned too closely to the past, then ...

Earnings announcements are one of the few scheduled events that consistently move markets. Prices react not just to the reported numbers, but to how those numbers compare with expectations. A small ...

Learn how to work with date and time values using Python's datetime library, and how to avoid some of the gotchas and pitfalls of the datetime datatype. Python’s datetime library, part of its standard ...

A lightweight Python library for effortless datetime handling with timezone support. Built for simplicity and flexibility, it provides a comprehensive set of utilities for parsing, converting, and ...

Pastas is an open-source Python framework designed for processing, simulation and analysis of hydrogeological time series models. It has built-in tools for statistically analyzing, visualizing and ...

Trends in time-series data can be cyclic or non-cyclic, impacting prediction accuracy. Detrending is the process of removing trends to reveal underlying cyclic behaviour in data. Different types of ...

If I didn't cover something you want to know about or you find another problem, please open an issue on github. The Unix shell is one of my favorite inventions ever. It's genius, plain and simple. The ...

A couple of months ago, I decided to start learning Python. But this article isn’t strictly about Python. Soon after I took my decision to (slowly) learn my way around it, I asked my friend Gabe ...