Python at SpaceX

[Terry Reedy]

https://stackoverflow.blog/tag/software-in-space/
has 4 links to interviews.  2 specifically mention Python.

https://stackoverflow.blog/2021/05/11/testing-software-so-its-reliable-enough-for-space/
"Python “is for backend test running, build orchestration, and all our 
web servers are python-based. It’s a lot of little scripts and a lot of 
big web services. "

https://stackoverflow.blog/2021/05/11/building-a-space-based-isp/
"Starlink software, both in satellites and on the ground, is written 
almost exclusively in C++, with some prototyping development in Python."

“For development and test of these algorithms, we have a full-scale 
network simulation running in continuous integration on a 
high-performance computing cluster. This simulation is capable of 
running the C++ production code as well as running against prototype 
code written in Python,”

-- 
Terry Jan Reedy