Python包的使用

subprocess

参考资料：https://stackoverflow.com/questions/18962785/oserror-errno-2-no-such-file-or-directory-while-using-python-subprocess-in-dj

# 用subprocess调用转换音频的命令，报错
subprocess.call("ffmpeg -i 23982.amr 50784.wav")
# 报错信息：OSError: [Errno 2] No such file or directory
# 加上shell参数
subprocess.call("ffmpeg -i 23982.amr 50784.wav", shell=True)