import time
oldfilename= input(“请输入要备份的文件名称:”)
print(“备份前文件名”,oldfilename)
newtime = time.strftime(’%Y%m%d%H%M%S’,time.localtime(time.time()))
oldfile = open(oldfilename,“rb”)
fileflagnum = oldfilename.rfind(’.’)
if fileflagnum >0:
newfilename = oldfilename[:fileflagnum]+"-"+newtime+"[备件]"
1
print(“备份后的文件名称为:”,newfilename)
newfile = open(newfilename,‘wb’)
for linecontent in oldfile.readlines():
newfile.write(linecontent)
oldfile.close()
newfile.close()
