话不多说,直接上代码
oldFileName=input('请输入文件的名字')
oldFile=open(oldFileName,'rb')
filelast=oldFileName.rfind('.')
if filelast>0:
filelastname=oldFileName[filelast:]
newFileName=oldFileName[:filelast]+'复件'+filelastname
newFile=open(newFileName,'wb')
for lineContent in oldFile.readlines():
newFile.write(lineContent)
oldFile.close()
newFile.close()



