A vulnerability in the Python programming language that has been overlooked for 15 years is now back in the spotlight as it likely affects more than 350,000 open-source repositories and can lead to code execution. Disclosed in 2007 and tagged as CVE-2007-4559, the security issue never received a patch, the only mitigation provided being a documentation update warning developers about the risk.

The great Bollinger Bands are one of the first things we must learn when analyzing time series. This is because of their sound statistical reasoning, their wide adoption across market participants, and their success when deployed in trading strategies. We can also see other variations that resemble the...