数据框列中的条形图/饼图标签

pip install pandas matplotlib

import pandas as pd
import matplotlib.pyplot as plt

data = {'Category': ['A', 'B', 'C', 'D'],
        'Value': [10, 20, 30, 40]}
df = pd.DataFrame(data)

ax = df.plot.bar(x='Category', y='Value', rot=0)
ax.set_xticklabels(df['Category'], ha='center')
plt.show()

ax = df.plot.pie(y='Value', labels=df['Category'], autopct='%1.1f%%', startangle=90)
ax.set_ylabel('')
plt.show()