如何从dataframe的列创建动画折线图？

import matplotlib.pyplot as plt
import matplotlib.animation as animation
import pandas as pd

fig, ax = plt.subplots()

def update(i):
    ax.clear()  # 清空子图
    # 获取第i列的数据
    data = df.iloc[:, i]
    # 绘制折线图
    ax.plot(data.index, data.values)
    # 设置标题和坐标轴标签
    ax.set_title('Animated Line Chart')
    ax.set_xlabel('X-axis')
    ax.set_ylabel('Y-axis')

df = pd.read_csv('data.csv')

ani = animation.FuncAnimation(fig, update, frames=len(df.columns), interval=1000)

plt.show()