从pandas条形图中的图例中删除列名

import pandas as pd
import matplotlib.pyplot as plt

# 创建示例数据
data = {'Name': ['Alice', 'Bob', 'Charlie', 'David'],
        'Age': [25, 30, 35, 40],
        'Salary': [50000, 60000, 70000, 80000]}

df = pd.DataFrame(data)

# 绘制条形图
ax = df.plot(x='Name', y='Salary', kind='bar', legend=False)

# 设置图形属性
ax.set_xlabel('Name')
ax.set_ylabel('Salary')
ax.set_title('Salary by Name')

# 显示图形
plt.show()