From zdnet.com
![code structure function binary](https://zdnet3.cbsistatic.com/hub/i/2020/08/07/2f3c8cae-e9b0-4f86-b47e-4540cfad3a31/image001.jpg)
Facebook has formally launched today one of Instagram’s secret tools for finding and fixing bugs in the app’s vast Python codebase.
Named Pysa, the tool is a so-called static analyzer. It works by scanning code in a “static” form, before the code is run/compiled, looking for known patterns that may indicate a bug, and then flagging potential issues with the developer.