List available system and matplotlib fonts to see which font is available to matplotlib

list-fonts.py

#!/usr/bin/env python3
from matplotlib.font_manager import FontManager
import subprocess
fm = FontManager()
mat_fonts = set(f.name for f in fm.ttflist)
output = subprocess.check_output(
    'fc-list :lang=zh -f "%{family}\n"', shell=True)
output = output.decode('utf-8')
zh_fonts = set(f.split(',', 1)[0] for f in output.split('\n'))
available = mat_fonts & zh_fonts
print('*' * 10, '系統中的字體', '*' * 10)
print(zh_fonts)
print('*' * 10, 'matplotlib 讀到的字體', '*' * 10)
print(mat_fonts)
print('*' * 10, '可用的字體 - 系統中和 matplotlib 讀到的字體交集', '*' * 10)
for f in available:
    print(f)