Re: [Python-de] multiprocessing ohne sem_open

Feb. 6, 2015

      Mike Müller <mmueller@python-academy.de> writes:
...
Am 05.02.15 um 21:04 schrieb Оlе Ѕtrеісhеr:
...
ole-usenet-spam@gmx.net (Оlе Ѕtrеісhеr) writes:
...
bekomme ich unter Python2.7 einen ImportError. Wenn ich es unter
Python3.4 mache, gibt es dagegen einen NotImplementedError.
... einen AttributeError, was tatsächlich völlig unverständlich ist.
Schau mal nach ob du wirklich multiprocessing importiert hast.
Ja klar, habe ich. Das Paket wird identisch installiert auf einem
Dutzend Plattformen.
...
Hinweis: Am Besten immer vollständige Tracebacks mitschicken und nicht
nur den Namen der Fehlerklasse.
Das ist 3.4.2:

self = <multiprocessing.context.DefaultContext object at 0x1449b0c>, maxsize = 0

    def Queue(self, maxsize=0):
        '''Returns a queue object'''
        from .queues import Queue
...
return Queue(maxsize, ctx=self.get_context())
/usr/lib/python3.4/multiprocessing/context.py:101: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <multiprocessing.queues.Queue object at 0x511e8cc>, maxsize = 0

    def __init__(self, maxsize=0, *, ctx):
        if maxsize <= 0:
...
maxsize = _multiprocessing.SemLock.SEM_VALUE_MAX
E           AttributeError: 'module' object has no attribute 'SemLock'

/usr/lib/python3.4/multiprocessing/queues.py:38: AttributeError

und das ist 2.7.9:

maxsize = 0

    def Queue(maxsize=0):
        '''
        Returns a queue object
        '''
...
from multiprocessing.queues import Queue
/usr/lib/python2.7/multiprocessing/__init__.py:217: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

    __all__ = ['Queue', 'SimpleQueue', 'JoinableQueue']

    import sys
    import os
    import threading
    import collections
    import time
    import atexit
    import weakref

    from Queue import Empty, Full
    import _multiprocessing
    from multiprocessing import Pipe
...
from multiprocessing.synchronize import Lock, BoundedSemaphore, Semaphore, Condition
/usr/lib/python2.7/multiprocessing/queues.py:48: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

    'Lock', 'RLock', 'Semaphore', 'BoundedSemaphore', 'Condition', 'Event'
    ]

    import threading
    import os
    import sys

    from time import time as _time, sleep as _sleep

    import _multiprocessing
    from multiprocessing.process import current_process
    from multiprocessing.util import Finalize, register_after_fork, debug
    from multiprocessing.forking import assert_spawning, Popen

    # Try to import the mp.synchronize module cleanly, if it fails
    # raise ImportError for platforms lacking a working sem_open implementation.
    # See issue 3770
    try:
    from _multiprocessing import SemLock
    except (ImportError):
    raise ImportError("This platform lacks a functioning sem_open" +
                      " implementation, therefore, the required" +
                      " synchronization primitives needed will not" +
...
" function, see issue 3770.")
E                     ImportError: This platform lacks a functioning sem_open implementation, therefore, the required synchronization primitives needed will not function, see issue 3770.

/usr/lib/python2.7/multiprocessing/synchronize.py:59: ImportError

Beides direkt kopiert aus dem entsprechenden Unittest-Fehlerreport.

Re: [Python-de] multiprocessing ohne sem_open

ole-usenet-spam＠gmx.net