Numbers with Prime Digit Sum

# Helper function
def is_prime(n):
    if n < 2:
        return False
    for i in range(2, int(n ** 0.5) + 1):
        if n % i == 0:
            return False
    return True

# Find numbers
print("Numbers 1-100 with prime digit sum:")
for num in range(1, 101):
    digit_sum = sum(int(d) for d in str(num))
    if is_prime(digit_sum):
        print(num, end=" ")
print()