I am literally working on two projects that are roughly 100kLOC each. The Scala Spark project I can navigate, understand, test and consider to be average compl

I am literally working on two projects that are roughly 100kLOC each. The Scala Spark project I can navigate, understand, test and consider to be average complexity... with some failures, unique to Scala. The Python Spark project is barely readable. People who built the Python Spark codebase are "experienced Python devs". While Scala codebase was built by people who used Scala for the first time. (take this anecdote, as evidence for the poor tooling and guidance present in python community.... and BDFL's own failures)