python使用xlrd与xlwt对excel的读写和格式设定

import xlrd, xlwt 
import os 
 
assert os.path.isfile('source_excel.xls'),"There is no timesheet exist. Exit..." 
 
book = xlrd.open_workbook('source_excel.xls') 
sheet=book.sheet_by_index(0) 
 
for rows in range(sheet.nrows): 
 value = sheet.cell(rows,0).value 

wbk = xlwt.Workbook(encoding='utf-8') 
sheet_w = wbk.add_sheet('write_after', cell_overwrite_ok=True) 
sheet_w.col(3).width = 5000 
tittle_style = xlwt.easyxf('font: height 300, name SimSun, colour_index red, bold on; align: wrap on, vert centre, horiz center;') 
sheet_w.write_merge(0,2,0,8,u'这是标题',tittle_style) 

check_num = 0 
 
def check_data(sheet): 
 global check_num 
 check_num=check_num+1 

date_arr = [] 
date=sheet.cell(row,2).value.rsplit('/')[-1] 
if date not in date_arr: 
  date_arr.append(date) 
sheet_w.write_merge(row2,row2,6,6,date_num, normal_style) 
sheet_w.write_merge(row2,row2,7,7,','.join(date_arr), normal_style) 

from datetime import date,datetime 
from xlrd import xldate_as_tuple 
 
if (sheet.cell(rows,3).ctype == 3): 
  num=num+1 
  date_value = xldate_as_tuple(sheet.cell_value(rows,3),book.datemode) 
  date_tmp = date(*date_value[:3]).strftime("%d") 

wbk.save('new_excel.xls')