在Python中复制流 [英] Copying a stream in Python

问题描述

如何在Python中将流的内容传输到另一个？

How do I transfer the contents of a stream to another in Python?

琐碎的解决方案是

output.write(input.read())

但如果输入文件大于可用内存（甚至无限大），则会失败;当部分副本也有用时，它也不能正常工作。基本上我正在寻找相当于 org.apache.commons.IOUtils.copy 。

but that fails if the input file is larger than the available memory (or even infinitely large); and it doesn't work well when a partial copy is useful as well. Basically I'm looking for the equivalent of org.apache.commons.IOUtils.copy.

推荐答案

shutil.copyfile 和 shutil.copyfileobj 用于救援。请参见 http://docs.python.org/library/shutil.html#module-shutil

shutil.copyfile and shutil.copyfileobj for the rescue. See http://docs.python.org/library/shutil.html#module-shutil

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