It’s a Python script that generates symbols from an XML input file. You create the XML file with a list of all the pins on your part and the function they will serve.

Researchers find bug in Python script may have affected hundreds of studies "Willoughby-Hoye" scripts used OS call that caused incorrect measurements on Linux, Mojave ...

The python is a respected deity in these parts and there are shrines dedicated to the worship of Eke. It is completely forbidden to kill a python here, as it has grave consequences.