最近帮朋友开发一个数据excel根据条件动态过率的功能.读取生成用pandas很方便,但是这里有一点比较麻烦的是得保留原来的单元格格式.这点操作起来就要麻烦一点了.下面总结了.xlsx和.xls处理

1.xlsx 文件处理

xlsx文件处理可以使用openpyxl库进行处理,比较简单,流程如下

1.获取原来的数据cell

2.进行value和style复制

import openpyxl
import copy
# 复制excel 保留格式
# file_path : 原文件地址
# out_file_path : 输出文件地址
# ids : 条件
def copy_xlsx(file_path,out_file_path,ids):# 打开原表workbook = openpyxl.load_workbook(file_path, data_only=True)# 获取第一个sheet表sheet = workbook.sheet_by_index(0)# 创建一个新的 Excel 文件new_workbook = openpyxl.Workbook()new_sheet = new_workbook.active  # 选择新工作表# 复制数据和样式i = 1  # openpyxl 行号从1开始for row in sheet.iter_rows():# todo 这里条件按需添加,可以去掉if i ==1 or row[0].value in ids:# 复制行for source_cell in row:target_cell = new_sheet.cell(row=i, column=source_cell.column,value = source_cell.value)# 复制样式if source_cell.has_style:# 设置样式 得用 copy.copy() 不然会报错target_cell._style = copy.copy(source_cell._style)target_cell.font = copy.copy(source_cell.font)target_cell.border = copy.copy(source_cell.border)target_cell.fill = copy.copy(source_cell.fill)target_cell.number_format = copy.copy(source_cell.number_format)target_cell.protection = copy.copy(source_cell.protection)target_cell.alignment = copy.copy(source_cell.alignment)i += 1# 保存新的 Excel 文件new_workbook.save(out_file_path)

2. xls 文件处理

xls文件处理起来麻烦点,

首先得引入xlrd 只能进行读取,xlwt负责写入,xlutils相当中间人,可以简化很多操作

import xlrd
import xlwt
from xlutils.filter import process, XLRDReader, XLWTWriter

1.xlrd 获取workbook_rb, formatting_info=True 这个一定要加才能获取到格式,formatting_info模式是false是不获取格式.

2.通过 xlutils 获取到所有单元格格式

3.通过 xlwt 的 worksheet.write(i, col_num, cell.value,style) 写入value 及 style

import xlrd
import xlwt
from xlutils.filter import process, XLRDReader, XLWTWriter# 创建 xls 
def create_xls(savePath:str,ids):# 创建一个新的 Excel 文件（写入模式）workbook_rb = xlrd.open_workbook(path.get(),formatting_info=True)  # 打开工作簿# 这里是关键,获取所有样式列表w = XLWTWriter()process(XLRDReader(workbook_rb, 'unknown.xls'), w)style_list = w.style_listsheet = sheet = workbook.sheet_by_index(0)new_workbook = xlwt.Workbook(encoding='utf-8')new_worksheet = new_workbook.add_sheet('sheet1')  # 添加一个新工作表，替换为你的工作表名称# xlrd 的 index 从0开始i=0for row_num, row in enumerate(sheet.get_rows(), start=0):if i ==0 or row[0].value in ids:for col_num, cell in enumerate(row, start=0):# 复制格式style = style_list[cell.xf_index]#获取当前单元格的stylenew_worksheet.write(i, col_num, cell.value,style)i+=1  new_workbook.save(savePath)return savePath

经过测试,上述代码是可以的,但是有个小问题

w = XLWTWriter()
process(XLRDReader(workbook_rb, 'unknown.xls'), w)
style_list = w.style_list

这段代码我就想获取到style_list 但的东西有点多,这里其实是复制了一个新的workbook对象.新对象里面有原始workbook的所有信息.

可以看到它包含的 原始 xlrd.book信息 ,xlwt.worksheet 信息(他已经将xlrd.book原始信息进行复制),style_list信息.

这个如果只是对于我们想获取style_list,那么这里信息有点太多.

因此我们能不能只获取style_list呢,我们通过XLWTWriter源码查询下style_list是如何获取的.看下能不能一探究竟.

通过过w.style_list进入源码查看,我们发现在xlutils.filter.BaseWriter.workbook 进行了定义.

接着我们找下style_list是如何进行赋值的,查询下发现如下代码self.style_list.append(wtxf),这个就是赋值代码.

让我们看下它是如何实现的,核心代码就是下面这个,大致流程就是

1.创建一个 xlwt.Style.XFStyle() 对象 wtxf

2.从rdbook中获取到格式信息 rdbook.xf_list

3.对 wtxf 进行各种赋值

		if not rdbook.formatting_info:returnfor rdxf in rdbook.xf_list:wtxf = xlwt.Style.XFStyle()## number format#wtxf.num_format_str = rdbook.format_map[rdxf.format_key].format_str## font#wtf = wtxf.fontrdf = rdbook.font_list[rdxf.font_index]wtf.height = rdf.heightwtf.italic = rdf.italicwtf.struck_out = rdf.struck_outwtf.outline = rdf.outlinewtf.shadow = rdf.outlinewtf.colour_index = rdf.colour_indexwtf.bold = rdf.bold #### This attribute is redundant, should be driven by weightwtf._weight = rdf.weight #### Why "private"?wtf.escapement = rdf.escapementwtf.underline = rdf.underline_type #### # wtf.???? = rdf.underline #### redundant attribute, set on the fly when writingwtf.family = rdf.familywtf.charset = rdf.character_setwtf.name = rdf.name# # protection#wtp = wtxf.protectionrdp = rdxf.protectionwtp.cell_locked = rdp.cell_lockedwtp.formula_hidden = rdp.formula_hidden## border(s) (rename ????)#wtb = wtxf.bordersrdb = rdxf.borderwtb.left   = rdb.left_line_stylewtb.right  = rdb.right_line_stylewtb.top    = rdb.top_line_stylewtb.bottom = rdb.bottom_line_style wtb.diag   = rdb.diag_line_stylewtb.left_colour   = rdb.left_colour_index wtb.right_colour  = rdb.right_colour_index wtb.top_colour    = rdb.top_colour_indexwtb.bottom_colour = rdb.bottom_colour_index wtb.diag_colour   = rdb.diag_colour_index wtb.need_diag1 = rdb.diag_downwtb.need_diag2 = rdb.diag_up## background / pattern (rename???)#wtpat = wtxf.patternrdbg = rdxf.backgroundwtpat.pattern = rdbg.fill_patternwtpat.pattern_fore_colour = rdbg.pattern_colour_indexwtpat.pattern_back_colour = rdbg.background_colour_index## alignment#wta = wtxf.alignmentrda = rdxf.alignmentwta.horz = rda.hor_alignwta.vert = rda.vert_alignwta.dire = rda.text_direction# wta.orie # orientation doesn't occur in BIFF8! Superceded by rotation ("rota").wta.rota = rda.rotationwta.wrap = rda.text_wrappedwta.shri = rda.shrink_to_fitwta.inde = rda.indent_level# wta.merg = ????#self.style_list.append(wtxf)

拿到这个代码后就简单了,我们就是照着封装一下,就是使用了.这样我们只要能够获取到rdbook (也就是xlrd获取到的book),就是获取到style_list了.无需获取到其他我们不关注的信息.

这样代码就是可以简单搞成这样,效率会提高不少,只需引入xlrd,xlwt

import xlrd
import xlwt
# 获取到表的所有单元格格式
def get_style_list(rdbook:xlrd.Book):style_list=[]if not rdbook.formatting_info:returnfor rdxf in rdbook.xf_list:wtxf = xlwt.Style.XFStyle()## number format#wtxf.num_format_str = rdbook.format_map[rdxf.format_key].format_str## font#wtf = wtxf.fontrdf = rdbook.font_list[rdxf.font_index]wtf.height = rdf.heightwtf.italic = rdf.italicwtf.struck_out = rdf.struck_outwtf.outline = rdf.outlinewtf.shadow = rdf.outlinewtf.colour_index = rdf.colour_indexwtf.bold = rdf.bold  # This attribute is redundant, should be driven by weightwtf._weight = rdf.weight  # Why "private"?wtf.escapement = rdf.escapementwtf.underline = rdf.underline_type# wtf.???? = rdf.underline #### redundant attribute, set on the fly when writingwtf.family = rdf.familywtf.charset = rdf.character_setwtf.name = rdf.name## protection#wtp = wtxf.protectionrdp = rdxf.protectionwtp.cell_locked = rdp.cell_lockedwtp.formula_hidden = rdp.formula_hidden## border(s) (rename ????)#wtb = wtxf.bordersrdb = rdxf.borderwtb.left = rdb.left_line_stylewtb.right = rdb.right_line_stylewtb.top = rdb.top_line_stylewtb.bottom = rdb.bottom_line_stylewtb.diag = rdb.diag_line_stylewtb.left_colour = rdb.left_colour_indexwtb.right_colour = rdb.right_colour_indexwtb.top_colour = rdb.top_colour_indexwtb.bottom_colour = rdb.bottom_colour_indexwtb.diag_colour = rdb.diag_colour_indexwtb.need_diag1 = rdb.diag_downwtb.need_diag2 = rdb.diag_up## background / pattern (rename???)#wtpat = wtxf.patternrdbg = rdxf.backgroundwtpat.pattern = rdbg.fill_patternwtpat.pattern_fore_colour = rdbg.pattern_colour_indexwtpat.pattern_back_colour = rdbg.background_colour_index## alignment#wta = wtxf.alignmentrda = rdxf.alignmentwta.horz = rda.hor_alignwta.vert = rda.vert_alignwta.dire = rda.text_direction# wta.orie # orientation doesn't occur in BIFF8! Superceded by rotation ("rota").wta.rota = rda.rotationwta.wrap = rda.text_wrappedwta.shri = rda.shrink_to_fitwta.inde = rda.indent_level# wta.merg = ????#style_list.append(wtxf)return style_list# 创建 xls
def copy_xls(file_path:str, savePath: str, ids):# 创建一个新的 Excel 文件（写入模式）workbook_rb = xlrd.open_workbook(file_path, formatting_info=True)  # 打开工作簿# 这里是关键,获取所有样式列表style_list = get_style_list(workbook_rb)# 获取第一个sheetsheet = sheet = workbook_rb.sheet_by_index(0)new_workbook = xlwt.Workbook(encoding='utf-8')new_worksheet = new_workbook.add_sheet('sheet1')  # 添加一个新工作表，替换为你的工作表名称# xlrd 的 index 从0开始i = 0for row in sheet.get_rows():# todo 这里条件按需添加,可以去掉if i == 0 or row[0].value in ids:for col_num, cell in enumerate(row, start=0):# 复制格式style = style_list[cell.xf_index]# 获取当前单元格的stylenew_worksheet.write(i, col_num, cell.value, style)i += 1new_workbook.save(savePath)return savePath

参考:

https://www.cnblogs.com/KeenLeung/p/14101049.html

https://blog.csdn.net/weixin_39804265/article/details/105127786