Here is the solution to Prime Numbers using functions in Python which is given below:

def primenumber(n):

primes = [ ]

for num in range(2, n + 1):

is_prime = True

for i in range(2, int(num ** 0.5) + 1):

if num % i == 0:

is_prime = False

break

if is_prime:

primes.append(num)

return primes

number = int(input("Enter range: "))

print(primenumber(number))