This a app I run on a Pi2 which displays the next busses arriving at the nearest bus stop TFL countdown API.
I wrote this in Python a decade ago. But it stopped working because TFL countdown was no longer prepared to communitate using now deprecated TLS ciphers. Python 2.7 is no longer supported on the Raspberry Pi, and upgrading to Python 3 was a pain so I just rewrote the thing in Go. The old Python code has been moved to the pibus directory.