How Facebook Catches Bugs in Its 100 Million Lines of Code For the past four years, Facebook has quietly used a homegrown tool called Zoncolan to find bugs in its massive codebase. Elena Lacey ...

With 35 million lines of Python code, the Athena trading platform is at the core of JPMorgan's business operations. A late start to migrating to Python 3 could create a security risk.

But annotating four million lines of Python code in this way isn’t a straightforward task, here are some of the lesser-known benefits and how Dropbox accomplished the task.