用pandas绘制水平持续时间

import pandas as pd
import matplotlib.pyplot as plt

data = {'Task': ['Task 1', 'Task 2', 'Task 3', 'Task 4'],
        'Start': [0, 2, 4, 7],
        'End': [3, 5, 6, 9]}
df = pd.DataFrame(data)

df['Duration'] = df['End'] - df['Start']

plt.barh(df['Task'], df['Duration'], color='skyblue')
plt.xlabel('Duration')
plt.ylabel('Task')
plt.title('Horizontal Duration Chart')
plt.show()