Answer 1

Its very simple ,If you want access entire module , we will use import .

Eg:

import math

print (math.p1) # you need to call respective class name (math ) in order to use their methods.

instead of that you want only a particular method means you will go for 'from'.

Eg:

from math import pi

print(pi) # here your calling the method without the class name(math)

Answer 2

it's like...

from grocery bring/import notebook
# then you can do whatever you want with notebook.