python-fretboard: landscape orientation and roman numerals for fret numbers

fboard_landscape.py

import fretboard
import svgwrite

fret_numerals = [None, 'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX', 'X', 'XI', 'XII', 'XIII', 'XIV', 'XV', 'XVI', 'XVII', 'XVIII', 'XIX', 'XX']
def rotate_90counter_and_save(fb, filename):
    fb.draw()
    [e.__setattr__('text', str(fret_numerals[int(e.text[:-2])])) for e in fb.drawing.elements if isinstance(e, svgwrite.text.Text) and e.text.endswith('fr')]
    [e.rotate(angle=90, center=(e.attribs['x'], e.attribs['y'])) for e in fb.drawing.elements if isinstance(e, svgwrite.text.Text)]

    drawing = svgwrite.Drawing()
    group = drawing.g()
    drawing.add(group)
    for e in fb.drawing.elements:
        group.add(e)
        
    width = next((e.attribs['width'] for e in fb.drawing.elements if isinstance(e, svgwrite.shapes.Rect)), 0)
    group.translate(tx=0, ty=width)
    group.rotate(angle=270)
    drawing.saveas(filename)


fb = fretboard.Fretboard(frets=(3, 15), style={'drawing': {'height': 1000}})
fb.add_string_label(string=0, label='E')
fb.add_string_label(string=1, label='A')
fb.add_string_label(string=2, label='D')
fb.add_string_label(string=3, label='G')
fb.add_string_label(string=4, label='B')
fb.add_string_label(string=5, label='E')
fb.add_marker(fret=5, string=[3, 5], label='1/2')
fb.add_marker(string=4, fret=6, label='R')
fb.add_marker(string=1, fret=8, label='R')

rotate_90counter_and_save(fb, 'out3.svg')