[issue37637] multiprocessing numpy.ndarray not transmitted properly

[Davin Potts]

Davin Potts  added the comment:

Marking as closed after providing an example of how to send NumPy arrays as 
bytes with the send_bytes() function.

--
resolution:  -> not a bug
stage:  -> resolved
status:  -> closed

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[issue37637] multiprocessing numpy.ndarray not transmitted properly

[Raymond Hettinger]

Change by Raymond Hettinger :


--
nosy: +davin

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[issue37637] multiprocessing numpy.ndarray not transmitted properly

[Benedikt Bieringer]

New submission from Benedikt Bieringer <2xb.cod...@wwu.de>:

The following code demonstrates the issue:

import numpy as np
from multiprocessing import Pipe
p1, p2 = Pipe()
arr = np.zeros((3, 5, 6), dtype=np.uint8)
p2.send_bytes(arr)
pm = p1.recv_bytes()
print(pm)

Only 3 bytes are transmitted for this array which obviously consists of more 
than 3 bytes.

--
components: Library (Lib)
messages: 348218
nosy: 2xB
priority: normal
severity: normal
status: open
title: multiprocessing numpy.ndarray not transmitted properly
type: behavior
versions: Python 3.6

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