python画图中文为宋体，英文为Times New Roman

参考链接如下：https://blog.csdn.net/qq_41821678/article/details/105804345

import numpy as np
import matplotlib.pyplot as plt
from matplotlib import rcParams
config = {
    "font.family":'serif',
    "font.size": 7.5,
    "mathtext.fontset": 'stix',
    "font.serif": ['SimSun'],

}
rcParams.update(config)

traindata = np.genfromtxt("./1.txt", dtype=np.float32)[:,1]
testdata = np.genfromtxt("./2.txt", dtype=np.float32)[:, 1]
plt.rcParams['font.sans-serif']=['SimHei']  #用来显示中文标签
plt.figure(figsize=(19.2, 10.8))
# plt.title('损失函数衰减曲线',fontsize=20)
# # plt.xlabel("迭代轮数(epochs)",fontsize=20)
# # plt.ylabel("损失函数值",fontsize=20)
plt.title('Loss Curve 厉害了',fontsize=25)
plt.xlabel("Epochs",fontsize=25)
plt.ylabel("Loss Values",fontsize=25)
plt.plot(traindata,label="train-loss")
plt.plot(testdata, label="val-loss")
plt.tick_params(labelsize=20)   #调整座标轴刻度的字体大小
plt.legend(fontsize=18)       #参数调整train-loss与val-loss字体的大小
plt.savefig("./pan5.png",bbox_inches='tight')
plt.show()