Doc: Fix buf argument name in multiprocessing connection send_bytes recv_bytes_into

[mdavis-xyz]

Documentation

The documentation for multiprocessing.connection.Connection.send_bytes says that the first argument is called buffer.

send_bytes(buffer[, offset[, size]])

When I run:

from multiprocessing import Pipe

c1, c2 = Pipe(duplex=True)

c1.send_bytes(buffer=b'123')

(On python 3.13)

TypeError: _ConnectionBase.send_bytes() got an unexpected keyword argument 'buffer'

In connection.py the argument is defined as buf not buffer.

def send_bytes(self, buf, offset=0, size=None):

Indeed when I instead write c1.send_bytes(buf=b'123'), it runs without throwing an exception.

The same is true of recv_bytes_into.

Note: I did not raise an issue for this, because it is so trivial.

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[mdavis-xyz]

Please add the “skip issue” label to this PR.