Does importing a specific function from a module is a faster process than importing the whole module?
That is, is from module import x debugs faster than import module?
No, it shouldn't be faster, and that shouldn't matter anyway: importing things is not usually considered a performance-critical operation, so you can expect it to be fairly slow compared to other things you can do in Python.  If you require importing to be very fast, probably something is wrong with your design.
Debugging issues in importing modules in Python