code: def repeats(seq, size):
      '''Count times that a sequence of a certain size is repeated.
  
      :param seq: Input sequence.
      :type seq: coral.DNA or coral.RNA
      :param size: Size of the repeat to count.
      :type size: int
      :returns: Occurrences of repeats and how many
      :rtype: tuple of the matched sequence and how many times it occurs
  
      '''
      seq = str(seq)
      n_mers = [seq[i:i + size] for i in range(len(seq) - size + 1)]
      counted = Counter(n_mers)
      # No one cares about patterns that appear once, so exclude them
      found_repeats = [(key, value) for key, value in counted.iteritems() if
                       value > 1]
      return found_repeatf repeats(seq, size):
      '''Count times that a sequence of a certain size is repeated.
  
      :param seq: Input sequence.
      :type seq: coral.DNA or coral.RNA
      :param size: Size of the repeat to count.
      :type size: int
      :returns: Occurrences of repeats and how many
      :rtype: tuple of the matched sequence and how many times it occurs
  
      '''
      seq = str(seq)
      n_mers = [seq[i:i + size] for i in range(len(seq) - size + 1)]
      counted = Counter(n_mers)
      # No one cares about patterns that appear once, so exclude them
      found_repeats = [(key, value) for key, value in counted.iteritems() if
                       value > 1]
      return found_repeats
docs: Count times that a sequence of a certain size is repeated.
  
      :param seq: Input sequence.
      :type seq: coral.DNA or coral.RNA
      :param size: Size of the repeat to count.
      :type size: int
      :returns: Occurrences of repeats and how many
      :rtype: tuple of the matched sequence and how many times it occurs