Pandas is an open source, BSD-licensed library providing high-performance, easy-to-use data structures and data analysis tools for the Python programming language. This reference is available here. See the Package overview for more detail about what's in the library.

Giphy cut the GIFs from episodes of Sign With Robert, an instructional video series whose host Robert DeMayo has been deaf since birth. His GIFs repeat the signs in an endless loop that's easy to study, along with facial expressions that many may not realize are a key part of ASL.

Online language learning company Duolingo has finally added a Mandarin course to its offerings. With more than one billion speakers, Mandarin is the most popular language on the planet, but it's also on one of the hardest to learn, which is why the course will prove a little beefier than its European language counterparts. English speakers will learn the language's characters as well as the four tones of Mandarin, with lessons structured by themes such as greetings, food, health and sports.

I call myself a statistician, because, well, I'm a statistics graduate student. However, the most important things I've learned are less formal, but have proven extremely useful when working/playing with data.

If you're a developer writing code in .NET, C, Java, JavaScript, PHP or Python, new research highlights the main security vulnerabilities you need to watch out for. Static code analysis security firm Veracode has released numbers on the types of vulnerabilities that are most prevalent in 130,000 apps it scanned for security issues. It has looked at bug trends across apps written in .NET, C, Java, JavaScript, PHP or Python. The numbers are compiled in Veracode's State of Software Security volume 11 report. For JavaScript, the most popular language for front-end development, Veracode found that 31.5% of these apps have at least one cross-site scripting (XSS) flaw, while it found 74.6% of apps written in PHP have at least one XSS flaw.