Python super simple batch change file suffix

1 ImportOS2 3Files = Os.listdir ("D:\QTDownloadRadio\QTDownloadRadio-Copy")#list all files in the current directory4 5  forFileNameinchFiles:6Portion = os.path.splitext (filename)#separating file names and suffixes7     Print(portion)8 9     ifPORTION[1] = =". mp4":#modified according to suffix, if no prefix is emptyTennewname = portion[0]+". mp3"#the new suffix to change OneOs.chdir ("D:\QTDownloadRadio\QTDownloadRadio-Copy")#switch file path, if no path to create a new or the same path, do the backup AOs.rename (Filename,newname)

Python super simple batch change file suffix