Answer to Question #315298 in Python for sabiha3

Question

sum prime numbers in the input

given a list of integers, write a program to print the sum of all prime numbers in the list of prime numbers.

note.one is either prime nor composite number.

input

the input will be a single line containing space separated integers..

output

the output should be a single line containing the sum of all prime numbers from 1 to N

explanation

for example, if the given list of integers are

2 4 5 6 7 3 8

as 2,3,5 and 7 are prime numbers,your code should print the sum of these numbers. so the output should be 17

sample input 1

2 4 5 6 7 3 8

sample output 1

17

sample input 2

65 87 96 31 32 86 57 69 20 42

sample output 2

31

Answer 1

def is_prime(x):
    if x < 2:
        return False
    if x == 2:
        return True
    if x%2 == 0:
        return False
    
    n = 3
    while n*n <= x:
        if x%n == 0:
            return False
        n += 2
    return True


def main():
    line = input()
    L = [int(s) for s in line.split()]

    sum = 0
    for x in L:
        if is_prime(x):
            sum += x
    print(sum)

main()