settings of Japanese characters in matplotlib figures

matplotlib_ja.py

import matplotlib
import os

# style setting
matplotlib.style.use('seaborn-white')

# font setting
fp = matplotlib.font_manager.FontProperties(fname=os.path.expanduser('~/Library/Fonts/ipaexg.ttf'))
plt.rcParams['font.family'] = fp.get_name()
plt.plot(0, 1)
plt.text(0, 1, "こんにちは世界")
plt.show()

# if characters are like ▢▢, delete `~/.matplotlib`