[erezhaba]

They Python Cloud Debugger uses a combination of line trace debugging (which is very slow) and the profiling callback (fast) to inspect the line of interest.

The Cloud Debugger is different from your tradition debugger as it optimizes for application speed. For example, it would capture values, let the thread continue and run, and only then serialize is back to the Cloud Debugger server.

[erezhaba]

Vlad is right, now it does codebyte rewrite. using the trace and profiling interface was the old way.