How to profile all functions belong to a module?

[PaleNeutron]

I have a module called foo and a test.py file import functions from the module. Is there any way to profile all lines belong to foo?

I read https://kernprof.readthedocs.io/en/latest/line_profiler.autoprofile.html#auto-profiling , the description seems what I need but if I use

python -m kernprof -lv -p foo main.py

It takes a long time and nothing happens.

[Erotemic]

@ta946