python - xlutils.copy でのセルの色の保持

Question

データを書式設定された Excel スプレッドシートにエクスポートしていますが、各セルの色を保持する方法がわかりません。使うことができます：

workbook_file = open_workbook(file_name, on_demand=True, formatting_info=True)

セルのサイズは保持されますが、スクリプトは新しいデータを各セルに書き込むため、新しいデータを入力すると、各セルが自動的にクリアされ、白になります。私が見つけたこの「ハック」を実装して、この問題を正確に解決できるのではないかと考えていますが、これを自分のスクリプトに適用する方法がわかりません。

Python の xlrd、xlwt、および xlutils.copy を使用してスタイルを保持する

これが私が現在持っているスクリプトです：

#!/usr/bin/env python

import xlrd
from xlutils.copy import copy
from xlrd import open_workbook

from canada import city, CanadaWeather
from canadausa import uscity, USWeather
from selectcities import selectcity, SelectCanadaWeather

cw = CanadaWeather()
cw.retrieveAll()

#Select Canada Cities that are not updated by 5:45am CT.

sc = SelectCanadaWeather()
sc.retrieveAllSelect()

#US Weather

uw = USWeather()
uw.retrieveAll()

cities = cw.getCities()
uscities = uw.getUSCities()
selectcities = sc.getSelectCities()

## 
# writing to excel
##
file_name = 'TEST_fcst_hilo_TEST.xls'
new_file_name = 'fcst_hilo.xls'
row = 1


column_names = ["high0", "low1", "high1", "low2", "high2",
                "low3", "high3", "low4", "high4", "low5",
                "high5", "low6", "high6"]

uscolumn_names = ["high0", "low1", "high1", "low2", "high2",
                  "low3", "high3", "low4", "high4"]

select_column_names = ["high0", "low1", "high1", "low2", "high2",
                       "low3", "high3", "low4", "high4", "low5",
                       "high5"]

workbook_file = None
try :
        # currently xlwt does not implement this option for xslx files
        workbook_file = open_workbook(file_name, on_demand=True, formatting_info=True)
except :
        workbook_file = open_workbook(file_name, on_demand=True)

workbook = copy(workbook_file)
sheet = workbook.get_sheet(0)

for city in cities:
    for column, col_name in enumerate(column_names, start=2):
        sheet.write(city.excel_row, column, getattr(city, col_name))

for uscity in uscities:
    for column, col_name in enumerate(uscolumn_names, start=2):
                sheet.write(uscity.usexcel_row, column, getattr(uscity, col_name))

for selectcity in selectcities:
        for column, col_name in enumerate(select_column_names, start=2):
                sheet.write(selectcity.excel_row, column, getattr(selectcity, col_name))

workbook.save(new_file_name)

これをどのように達成できるかについてのアイデアは大歓迎です。ありがとうございました！