There's been an upset in the Octoverse, as Python has unseated JavaScript as the most-used programming language on GitHub.… Python's ascendancy from the number-two slot, which it's held since ...

Its top 10 were JavaScript, Python, Java, PHP, C#, CSS, C++, TypeScript, Ruby, C, and Swift. Rust was in 19th spot. Notably, though, Java was not one of the languages to see much growth on GitHub.