def compare_with_source(source_fname, realigned_fname, seq1, seq2):
    d = DataLoader()
    src = d.getSequences(source_fname, [seq1+'$', seq2+'$'])
    realigned = d.getSequences(realigned_fname, [seq1+'$', seq2+'$'])

    src_f = create_alignemnt_function(src)
    realigned_f = create_alignemnt_function(realigned)

    l = max(len(src[0]), len(realigned[0]))
    s = 0
    for i in range(min(len(src[0]), len(realigned[0]))):
        if src_f(i) == realigned_f(i):
            s += 1

    return float(s)/l
def score(fname):
    sequence_names = ['sequence1', 'sequence2', 'sequence3']
    sequences = []
    # fname = 'data/sequences/simulated_alignment.{}_{}.realigned.fa'

    d = DataLoader()
    for x in range(len(sequence_names)-1):
        for y in range(x+1, len(sequence_names)):
            sX = sequence_names[x]
            sY = sequence_names[y]
            if sX != sY:
                sequences.append(d.getSequences(
                    fname.format(sX, sY), [sX+'$', sY+'$'])
                )

    return compare(*sequences)