利用Python实现Excel的文件间的数据匹配功能

import pandas as pd
def match(file,sheetnames,reffile,refsheet,targetsegs,matchseg)  #文件名 sheet列表 参考文件名 参考sheet 目标字段列表 参考字段
	alldata=pd.read_excel(file,None)
	refdata=pd.read_excel(reffile,refsheet)
	#获取映射字典
	maps={}
	for i in refdata.index:
		MatchSeg=refdata.loc[i,matchseg]
		maps[MatchSeg]={}
		for seg in targetsegs:
			maps[MatchSeg][seg]=refdata.loc[i,seg]
	#匹配数据
	for sheet in sheetnames:
		if(isinstance(sheet,int)):
			sheet=list(alldata.keys())[sheet]

		data=alldata[sheet].fillna('-')
		for i in data.index:
			MatchSeg=data.loc[i,matchseg]
			for seg in targetsegs:
				try:
					data.loc[i,seg]=map[MatchSeg][seg]
				except Exception as e:
					pass

		alldata[sheet]=data
	#导出
	with pd.ExcelWriter(file) as writer:
		for sheet in alldata.keys():
			alldata[sheet].to_excel(writer,sheet,index=False)
			
match('要匹配的表.xlsx',[0,1],'参考表.xlsx','参考页',['要匹配的字段1,字段2'],'参考字段')