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