Practice Makes Perfect.Please explain is_prime answer to me


#1

This is apparently an answer to is_prime. I don't understand it or how it relates to the hint.

def is_prime(x):
if x < 2:
return False
elif x == 2:
return True
for n in range(2, x):
if x % n == 0:
return False
else:
return True


#2

Hint is:

Remember: all numbers less than 2 are not prime numbers!

This part of code is strictly related to the hint:

if x < 2:
    return False