批量转换目录下音频格式的，批量转换音频格式,##import os;

批量转换目录下音频格式的，批量转换音频格式,##import os;

##import os;def fa(dir):    dst_dir = os.getcwd() + '/mp3/';    lists = os.walk(dir);    for root, dirs, files in lists:        for file in files:            pix = os.path.splitext(file);            if 'amr' == pix[1][1:]:                dst_file = dst_dir + pix[0] + '.mp3';                src_file = root + '/' + file;                cmd = 'ffmpeg -i ' + src_file + ' ' + dst_file;                os.system(cmd)    print('ok');fa('/root/python/amr');