Python 如何在内存中创建文件对象
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How to create in memory file object
提问by Fatih K?l??
I want to make a in-memory file to use in pygame mixer. I mean something like that (http://www.pygame.org/docs/ref/music.html#pygame.mixer.music.loadit says load() method supports file object)
我想制作一个在 pygame 混音器中使用的内存文件。我的意思是这样的（http://www.pygame.org/docs/ref/music.html#pygame.mixer.music.load它说 load() 方法支持文件对象）
import requests
from pygame import mixer
r = requests.get("http://example.com/some_small_file.mp3")
in_memory_file = file(r.content) #something like that
mixer.music.init()
mixer.music.load(in_memory_file)
mixer.music.play()
回答by Antwane
You are probably looking for BytesIOor StringIOclasses from Python iopackage, both available in python 2and python 3. They provide a file-like interface you can use in your code the exact same way you interact with a real file.
您可能正在寻找Python包中的BytesIO或StringIO类io，它们都在python 2和python 3 中可用。它们提供了一个类似文件的界面，您可以在代码中使用与与真实文件交互完全相同的方式。
StringIOis used to store textual data:
StringIO用于存储文本数据：
import io
f = io.StringIO("some initial text data")
BytesIOmust be used for binary data:
BytesIO必须用于二进制数据：
import io
f = io.BytesIO(b"\x00\x00\x00\x00\x00\x00\x00\x00\x01\x01\x01\x01\x01\x01")
To store MP3 file data, you will probably need the BytesIOclass. To initialize it from a GET request to a server, proceed like this:
要存储 MP3 文件数据，您可能需要BytesIO该类。要将其从 GET 请求初始化到服务器，请按以下步骤操作：
import requests
from pygame import mixer
import io
r = requests.get("http://example.com/somesmallmp3file.mp3")
inmemoryfile = io.BytesIO(r.content)
mixer.music.init()
mixer.music.load(inmemoryfile)
mixer.music.play()
