def ChargeExtractor(filename):
    with open(filename) as gaussfile:
        charge_section = False
        for line in gaussfile:
            if charge_section:
                print(line.split())
            if "Mulliken atomic charges" in line:
                charge_section = True
            if "Sum of Mulliken atomic charges" in line:
                break

ChargeExtractor("NSC_1317.log")