Similarly, py-spy is a sampling profiler for Python programs. It lets you visualize what your Python program is spending time on without restarting the program or modifying the code in any way. py-spy is extremely low overhead: it is written in Rust for speed and doesn't run in the same process as the profiled Python program. This means py-spy is safe to use against production Python code.

I'm not sure if it exports results in a format Chrome can render but it does produce great interactive SVGs and is compatible with speedscope.app

https://github.com/benfred/py-spy

https://github.com/jlfwong/speedscope

There is also https://profiler.firefox.com/

https://fasterthanli.me/articles/when-rustc-explodes & https://fasterthanli.me/articles/why-is-my-rust-build-so-slo...

these two articles also showcase how to use chrome for this

While yes, it's really meh compared to something like Hotspot. Interactivity and availability do not favor JavaScript+DOM.