此问题在此处已有答案：

Using axvspan for date ranges（2个答案）
1小时前关闭。
嗨，我试图在两个时间点之间的区域进行着色。即13：00至14：00，但不断得到一个. ConversionError：无法将值转换为轴单位：【十三时，十四时】

for date in dates:
data = df[df['TradeTimeUtc'].dt.date == date]

fig, ax1 = plt.subplots()

# plot spread on primary axis
ax1.plot(data['TradeTimeUtc'], data['spread'], color='blue')
ax1.set_xlabel('TradeTimeUtc')
ax1.set_ylabel('spread', color='blue')
ax1.tick_params('y', colors='blue')

# add a vertical shaded region to highlight the time between 13:00 to 14:00 and this is where the problem is 
ax1.axvspan("12:00","13:00", alpha=0.2, color='gray')

# create a secondary axis for Volume
ax2 = ax1.twinx()

# plot Volume on secondary axis as a bar chart
ax2.bar(data['TradeTimeUtc'], data['acc_vol'], width = 0.0003, color='red', alpha=0.1)
ax2.set_ylabel('Volume', color='red')
ax2.tick_params('y', colors='red')

# set plot title
ax1.set_title(f'Spread and Volume on {date}')

# adjust layout
fig.tight_layout()

# show plot
plt.show()

由于某种原因，它没有拿起我想遮阳的时间，任何建议欢迎，谢谢