Issue with understanding code!!

[sindhujit]

This is a useful tool that we want to re-use. However, I do not understand the logic defined inside index function in views.py. When I run that, I do not get either "job" or "n" in request.GET. How does that function link to the entire project?
Or more so,
from .tasks import fft_random
job = fft_random.delay(int(n))
Where does the above two lines fit and how?