If we reach the end of the file, we simply open the next, until we \
        run out of archives to process

def get_next_line(self):
        """If we reach the end of the file, we simply open the next, until we \
        run out of archives to process"""

        line = self.freq_file.readline().strip().split()
        if len(line) < 1:
            self.load_genotypes()
            line = self.freq_file.readline().strip().split()
        info_line = self.info_file.readline().strip().split()
        info = float(info_line[4])
        exp_freq = float(info_line[3])
        return line, info, exp_freq