openTag = """<span style='font-size:1.0em; color: """
openTagEnd = ";font-family: courier, arial, helvetica, sans-serif;'>"
nbsp = '&nbsp;&nbsp;&nbsp;&nbsp;'

def _traditional_diff(linesfromDiff, openTag, openTagEnd, nbsp):
    lines = []
    line_num = 0

    def updateLine(line_num, color, line):
        tabs = line.count('t')
        lines.append("%s:%s#%s%s%s%s</span><br>" %
        ((repr(line_num), openTag, color, openTagEnd, nbsp*tabs, line)))
        return lines

    for line in linesfromDiff:
        if (line.startswith('diff ') or
                line.startswith('index ') or
                line.startswith('--- ')):
            color = "10EDF5"
            updateLine(line_num, color, line)
            continue

        if line.startswith('-'):
            color = "ff0000"
            updateLine(line_num, color, line)
            continue


        if line.startswith('+++ '):
            color = "07CB14"
            updateLine(line_num, color, line)
            continue

        if line.startswith('@@ '):
            _, old_nr, new_nr, _ = line.split(' ', 3)
            line_num = int(new_nr.split(',')[0])
            color = "5753BE"
            updateLine(line_num, color, line)
            continue

        if line.startswith('+'):
            color = "007900"
            updateLine(line_num, color, line)

        if line.startswith('+') or line.startswith(' '):
            line_num += 1

    return ''.join(lines)

<td>

</td>

<table><tr>%s</tr></table>