How To Create Gradient Filled Simple Column Chart Using xlwings?

【Example】

【Code】

import xlwings as xw
import os

def set_style(cht):
    cht.ChartArea.Format.Line.Visible=False
    cht.PlotArea.Format.Fill.Visible = False
    cht.PlotArea.Format.Line.Visible = True
    cht.PlotArea.Format.Line.ForeColor.RGB=xw.utils.rgb_to_int((200,200,200))
    #cht.PlotArea.Format.Line.ForeColor.ObjectThemeColor = msoThemeColorText1
    ax1 = cht.Axes(1)
    ax2 = cht.Axes(2)
    ax1.HasTitle = True
    ax1.AxisTitle.Text = 'Categories'
    ax1.AxisTitle.Font.Size = 10
    ax1.TickLabels.Font.Size = 8
    #ax1.TickLabels.NumberFormat = '0.00'
    ax1.HasMajorGridlines = True
    ax2.HasTitle = True
    ax2.AxisTitle.Text = 'Values'
    ax2.AxisTitle.Font.Size = 10
    ax2.TickLabels.Font.Size = 8
    ax2.HasMajorGridlines = True
    cht.HasTitle = True
    #cht.ChartTitle.Caption = 'Plot'
    #cht.ChartTitle.Font.Size = 12

root=os.getcwd()
app=xw.App(visible=True,add_book=False)
wb=app.books.open(root+r'/data.xlsx',read_only=False)
sht=wb.sheets('Sheet1')

sht.api.Range('A2:B9').Select()  #
shp=sht.api.Shapes.AddChart2(-1,xw.constants.ChartType.xlColumnClustered,20,20,350,250,True)
cht=shp.Chart  #
cht.ChartGroups(1).GapWidth=50
cht.SeriesCollection(1).Format.Fill.ForeColor.RGB=xw.utils.rgb_to_int((0,0,255))
cht.SeriesCollection(1).Format.Fill.OneColorGradient(1,1,1)    #msoGradientHorizontal
cht.SeriesCollection(1).Format.Line.ForeColor.RGB=xw.utils.rgb_to_int((0,0,0))

set_style(cht)

cht.Export(root+'/cht.jpg')
cht.Export(root+'/cht.svg')
cht.ExportAsFixedFormat(0,root+'/cht.pdf')

#wb.save()
#app.kill()