Nikolaus Rath added the comment:
Here's a first attempt at improvement based on my guess:
os.writev(fd, buffers)
Write the contents of buffers to file descriptor fd, where buffers is an
arbitrary sequence of buffers. In this context, a buffer may be any Python
object that provides a Memory View, i.e. that may be used to instantiate a
`memoryview` object (e.g. a bytes or bytearray object). writev writes the
contents of each memory view to the file descriptor and returns the total
number of bytes written.
os.readv(fd, buffers)
Read from a file descriptor into a number of writable buffers. buffers is
an arbitrary sequence of writable buffers. In this context, a buffer may be any
Python object that provides a writeable Memory View, i.e. that may be used to
instantiate a `memoryview` object whose `read_only` attribute is false (for
example, a bytearray object). Writeable memory views have a fixed size, and
readv will transfer data into each buffer until it is full and then move on to
the next buffer in the sequence to hold the rest of the data. readv returns the
total number of bytes read (which may be less than the total capacity of all
the buffers).
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue17811>
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