nerd-fonts/bin/scripts/name_parser/query_sftn

#!/usr/bin/env python3
# coding=utf8

import fontforge
import sys

def get_sfnt_dict(font):
    """Extract SFNT table as nice dict"""
    return { k: v for l, k, v in font.sfnt_names }

if len(sys.argv) < 2 or len(sys.argv) > 3:
    print("Usage: {} [<sfnt-name>] font_name\n".format(sys.argv[0]))
    sys.exit(1)

if len(sys.argv) == 2:
    fname = sys.argv[1]
    sname = None
else:
    fname = sys.argv[2]
    sname = sys.argv[1]

font = fontforge.open(fname)
sfnt = get_sfnt_dict(font)
font.close()

if sname:
    for key in sname.split(','):
        if key in sfnt:
            print("SFNT {:20.20} is {:80.80}".format(key, '\'' + sfnt[key] + '\''));
        else:
            print("SFNT {:20.20} is not set".format(key));
else:
    for k in sfnt:
        print("{:20.20} {:80.80}".format(k, sfnt[k]))