如何使用matplotlib自定义甘特图，并在图形上显示表示当前时间的垂直线？

import matplotlib.pyplot as plt
import datetime

fig, ax = plt.subplots()

start_dates = [datetime.datetime(2022, 1, 1), datetime.datetime(2022, 1, 15), datetime.datetime(2022, 2, 1)]
end_dates = [datetime.datetime(2022, 1, 10), datetime.datetime(2022, 1, 25), datetime.datetime(2022, 2, 10)]
y_pos = [1, 2, 3]

ax.barh(y_pos, end_dates, left=start_dates, height=0.5)

current_date = datetime.datetime.now()
ax.axvline(x=current_date, color='red', linestyle='--')

ax.set_title('Gantt Chart')
ax.set_xlabel('Date')
ax.set_ylabel('Projects')

ax.xaxis_date()
ax.xaxis.set_major_formatter(plt.DateFormatter('%Y-%m-%d'))

fig.tight_layout()

plt.show()