在python中绘图时如何在坐标轴上进行自定义？

import matplotlib.pyplot as plt

fig, ax = plt.subplots()

ax.set_xlabel('X轴标签')
ax.set_ylabel('Y轴标签')
ax.set_xlim(0, 10)  # 设置X轴范围为0到10
ax.set_ylim(0, 20)  # 设置Y轴范围为0到20

ax.set_xticks([1, 2, 3, 4, 5])  # 设置X轴刻度
ax.set_xticklabels(['A', 'B', 'C', 'D', 'E'])  # 设置X轴刻度标签
ax.set_yticks([0, 5, 10, 15, 20])  # 设置Y轴刻度
ax.set_yticklabels(['Low', 'Medium', 'High', 'Very High', 'Max'])  # 设置Y轴刻度标签

x = [1, 2, 3, 4, 5]
y = [10, 15, 7, 12, 8]
ax.plot(x, y)  # 绘制线图

plt.show()