在python中将数据写入fifo文件

Question

我已经录制了一个音频文件，我正在将该文件转换为 base64 格式。现在我想将此音频文件写入 fifo 文件。 代码如下：

import os 
import base64
import select
os.system("mkfifo audio1.fifo")
with open("audio1.fifo") as fifo:
     select.select([fifo],[],[fifo])
     with open("out1.wav","rb") as audioFile:
         str = base64.b64encode(audioFile.read())
         fifo.write(str)

但是上面的代码只创建了fifo文件，没有在里面写任何东西。请给点建议。

Answer 1

使用+模型可以同时支持读写

import base64
import select
os.system("mkfifo audio1.fifo")
with open("audio1.fifo", "wb") as fifo:
     select.select([fifo],[],[fifo])
     with open("out1.wav","rb") as audioFile:
         str = base64.b64encode(audioFile.read())
         fifo.write(str)

同时读写两个不同的文件：

# maker sure the be read file's has some data.
with open("a.file", "w") as fp:
    fp.write("some data")

# now a.file has some data, we create a b.file for write the a.file's data.
with open("b.file", "w") as write_fp, open("a.file", "r") as read_fp:
    write_fp.write(read_fp.read())

# for bytes data
with open("b.file", "wb") as write_fp, open("a.file", "rb") as read_fp:
    write_fp.write(read_fp.read())