blockstates_generator.py

PROPS = {
  "instrument": [
    "harp",
    "basedrum",
    "snare",
    "hat",
    "bass",
    "flute",
    "bell",
    "guitar",
    "chime",
    "xylophone",
    "iron_xylophone",
    "cow_bell",
    "didgeridoo",
    "bit",
    "banjo",
    "pling"
  ],
  "note": [
    "0",
    "1",
    "2",
    "3",
    "4",
    "5",
    "6",
    "7",
    "8",
    "9",
    "10",
    "11",
    "12",
    "13",
    "14",
    "15",
    "16",
    "17",
    "18",
    "19",
    "20",
    "21",
    "22",
    "23",
    "24"
  ],
  "powered": [
    "true",
    "false"
  ]
}

BLOCK = 'note_block'

from itertools import product
import json

keys = tuple(PROPS.keys())
variants = {}

for values in product(*PROPS.values()):
	variant = ','.join([f'{keys[i]}={v}' for i, v in enumerate(values)])
	variants[variant] = { 'model': f'minecraft:block/{BLOCK}' }

with open(f'{BLOCK}.json', 'w') as f:
	json.dump({ "variants": variants }, f, indent=2)