Answer to Question #179426 in Python for jayanth

Question

Sum of 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 integers.

Note: One is neither 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 IsPrime(n):
    if n < 0:
        raise ValueError('Negative value')
    if n < 2:
        return False
    if n == 2:
        return True
    if n % 2 == 0:
        return False
    i = 3
    while(i * i < n):
        if n % i == 0:
            return False
        i += 2
    return True

sum = 0
for n in [int(i) for i in input().split()]:
    if IsPrime(n) == True:
        sum += n

print(sum)