matplotlib 子图 - IndexError：数组的索引太多

Question

我正在使用subplots函数将 8 列绘制成一个图形。然而，它显示

“IndexError：数组的索引太多”

# -*- coding: utf-8 -*-

import pandas as pd

from matplotlib import pyplot as plt

from matplotlib import style

df = pd.read_csv('XXXX', encoding='utf-8')

num = 0

for dim in ['A','B','C','D','E','F','G','H']:

    fig, axes = plt.subplots(nrows=8, ncols=1)

    df[dim].plot(ax=axes[num,0])

    plt.xlabel(dim)

    num += 1

plt.show()