I think on reflection however we need to remember, with all our sprints and agile iterations, that just in Instagram billions of web requests are being served by just dozens of developers based on code written over 25 years now, following good practises and hard work - kudos to the Python Dev team on 25 years.
To be fair, that's more like "started 25 years ago". Very little of the original Python 1.0 code exists (especially given the great renaming when the "Py"/"PY"-prefix occurred.)
I like to think of the thousands of developers involved. ;)
For example, assuming Instagram uses gcc to build Python or any of the other components, gcc started in 1987.
Parts of glibc have copyrights dating from the 1980s, like netinet/tcp.h Copyright (c) 1982, The Regents of the University of California .
