I disagree with the idea that you can't maintain a robust system/codebase in python, mainly because nearly our entire distributed computing stack is written in python.

Granted it isn't 10s of thousands of lines, but it isn't small either. It does a lot of things ranging from webapis to data pipelining with ingestion and egestion of large datasets. One batch job can result in 10s of GBs in output files. It has to be performant too, 10s of millions of "operations" in one batch job is common.

Admittedly the process/threading model can be painful to work around at times, but totally doable, and is honestly somewhat friendly to distributed systems to an extent because it somewhat forces you into an actor model paradigm.