custom_font_showing_in_matplotlib.py

import matplotlib.pyplot as plt
from matplotlib import font_manager
import seaborn as sns

font_path = './font/IPAGothic_24302.ttf'  # Your font path goes here, as example using jp fonts
font_manager.fontManager.addfont(font_path)
prop = font_manager.FontProperties(fname=font_path)

plt.rcParams['font.family'] = 'sans-serif'
plt.rcParams['font.sans-serif'] = prop.get_name()

# test
data = [('上海', 285), ('杭州', 225), ('北京', 163), ('广州', 136)]
sns.barplot(x=[k for k, _ in data], y=[v for _, v in data])