我最近一周一直在使用Bokeh，但有一件事我似乎做不到。
这是我的脚本的一部分：
data5 = dict(depth = df4['Depth'], length = df4['Length'], recovery = df4['Recovery'], peak = df4['Peak'], valley = df4['Valley'], exitdate = df4['Exit Date'])
data6 = dict(returns = df5['Return'], correlation = df5['Correlation'])
source5 = ColumnDataSource(data5)
source6 = ColumnDataSource(data6)
columns5 = [TableColumn(field = 'depth', title = 'Depth'), TableColumn(field = 'length', title = 'Length (Months)'),
TableColumn(field = 'recovery', title = 'Recovery (Months)'), TableColumn(field = 'peak', title = 'Peak'),
TableColumn(field = 'valley', title = 'Valley'), TableColumn(field = 'exitdate', title = 'Exit Date')]
columns6 = [TableColumn(field = 'returns', title = 'Return'), TableColumn(field = 'correlation', title = 'Correlation')]
table5 = DataTable(source = source5, columns = columns5, width = 700, height = 350, editable = False)
table6 = DataTable(source = source6, columns = columns6, width = 400, height = 300, editable = False)
para5 = Paragraph(text = 'Portfolio', height = 1)
para6 = Paragraph(text = 'Benchmark', height = 1)
title2 = Paragraph(text = 'Drawdown Review (Since Sep 2011)', height = 1)
t2 = vplot(vform(para5), vform(table5))
t3 = vplot(vform(para6), vform(table6))
t4 = hplot(t2, t3)
q5 = vplot(vform(title2), t4)
tab0 = Panel(child = q0, title = 'Rolling Statistics')
tab1 = Panel(child = q1, title = 'Up-Down Capture')
tab2 = Panel(child = q2, title = 'Historical Statistics')
tab3 = Panel(child = q3, title = 'Historical Track Record')
tab4 = Panel(child = q4, title = 'Historical Analysis')
tab5 = Panel(child = q5, title = 'Drawdown Review')
tabs = Tabs(tabs = [tab3, tab4, tab5, tab0 ,tab1, tab2])
bk.io.show(tabs)
我发现在整个gridplot中为页面/选项卡设置标题的方法（是否有这种方法？）在bokeh中无法实现。所以我插入了段落（para5/para6）。这很好用，但文字是Times New Roman字体，我想使用另一种字体，比如Arial，并使其加粗和带下划线。
我尝试过
title2.text_font_style = 'arial'之类的操作，但没有成功。根据文档，段落没有这种属性。
有没有绕开设置段落小部件字体的间接方法？
提前致谢