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Fretboard is a python library for generating SVG fretboard images and chord charts in Python.

Project description

Fretboard is a python library for generating SVG fretboard images and chord charts in Python.

example.png

Install

pip install fretboard

Usage

Basic Examples

Guitar chord:

chord = fretboard.Chord(positions='xx0232', fingers='---132')
chord.save('svg/D.svg')

Bass chord:

chord = fretboard.BassChord(positions='x221', fingers='-321')
chord.save('svg/bass-E.svg')

Ukulele chord:

chord = fretboard.UkuleleChord(positions='x232', fingers='-132')
chord.save('svg/ukulele-G.svg')

Penatonic scale shape:

fb = fretboard.Fretboard(frets=(5, 8), style={'marker': {'color': 'dodgerblue'}})
fb.add_marker(string=0, fret=5, label='A', color='chocolate')
fb.add_marker(string=1, fret=5, label='D')
fb.add_marker(string=2, fret=5, label='G')
fb.add_marker(string=3, fret=5, label='C')
fb.add_marker(string=4, fret=5, label='E')
fb.add_marker(string=5, fret=5, label='A', color='chocolate')

fb.add_marker(string=0, fret=8, label='C')
fb.add_marker(string=1, fret=7, label='E')
fb.add_marker(string=2, fret=7, label='A', color='chocolate')
fb.add_marker(string=3, fret=7, label='D')
fb.add_marker(string=4, fret=8, label='G')
fb.add_marker(string=5, fret=8, label='C')
fb.save('svg/pentatonic-shape.svg')

Demo

The demo/ directory contains runnable examples that are served up in a web page.

python-fretboard/demo $ pip install -r requirements.txt
python-fretboard/demo $ invoke serve

Point your browser to http://localhost:8080 and check out the freshly rendered fretboards!

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