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# -*- coding: utf-8 -*-
# taskmanager.py
import random, time, Queue
from multiprocessing.managers import BaseManager
# 发送任务的队列:
task_queue = Queue.Queue()
# 接收结果的队列:
result_queue = Queue.Queue()
# 从BaseManager继承的QueueManager:
class QueueManager(BaseManager):
pass
# 把两个Queue都注册到网络上, callable参数关联了Queue对象:
QueueManager.register('get_task_queue', Queue.Queue())
QueueManager.register('get_result_queue', lambda: Queue.Queue())
# 绑定端口5000, 设置验证码'abc':
manager = QueueManager(address=('', 5000), authkey='abc')
# 启动Queue:
manager.start()
# 获得通过网络访问的Queue对象:
task = manager.get_task_queue()
result = manager.get_result_queue()
# 放几个任务进去:
for i in range(10):
n = random.randint(0, 10000)
print('Put task %d...' % n)
task.put(n)
# 从result队列读取结果:
print('Try get results...')
for i in range(10):
r = result.get(timeout=10)
print('Result: %s' % r)
# 关闭:
manager.shutdown()
Python 2.7.8 (default, Jun 30 2014, 16:03:49) [MSC v.1500 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> ================================ RESTART ================================
>>>
Traceback (most recent call last):
File "C:/Users/wangwei/Desktop/test", line 22, in <module>
manager.start()
File "C:\Python27\lib\multiprocessing\managers.py", line 524, in start
self._process.start()
File "C:\Python27\lib\multiprocessing\process.py", line 130, in start
self._popen = Popen(self)
File "C:\Python27\lib\multiprocessing\forking.py", line 277, in __init__
dump(process_obj, to_child, HIGHEST_PROTOCOL)
File "C:\Python27\lib\multiprocessing\forking.py", line 199, in dump
ForkingPickler(file, protocol).dump(obj)
File "C:\Python27\lib\pickle.py", line 224, in dump
self.save(obj)
File "C:\Python27\lib\pickle.py", line 331, in save
self.save_reduce(obj=obj, *rv)
File "C:\Python27\lib\pickle.py", line 419, in save_reduce
save(state)
File "C:\Python27\lib\pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "C:\Python27\lib\pickle.py", line 649, in save_dict
self._batch_setitems(obj.iteritems())
File "C:\Python27\lib\pickle.py", line 681, in _batch_setitems
save(v)
File "C:\Python27\lib\pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "C:\Python27\lib\pickle.py", line 562, in save_tuple
save(element)
File "C:\Python27\lib\pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "C:\Python27\lib\pickle.py", line 649, in save_dict
self._batch_setitems(obj.iteritems())
File "C:\Python27\lib\pickle.py", line 681, in _batch_setitems
save(v)
File "C:\Python27\lib\pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "C:\Python27\lib\pickle.py", line 562, in save_tuple
save(element)
File "C:\Python27\lib\pickle.py", line 286, in save
f(self, obj) # Call unbound method with explicit self
File "C:\Python27\lib\pickle.py", line 748, in save_global
(obj, module, name))
PicklingError: Can't pickle <function <lambda> at 0x02747DB0>: it's not found as __main__.<lambda>
>>>
Traceback (most recent call last):
File "task_mater.py", line 19, in <module>
manager.start()
File "C:\Program Files\Python35\lib\multiprocessing\managers.py", line 479, in start
self._process.start()
File "C:\Program Files\Python35\lib\multiprocessing\process.py", line 105, in start
self._popen = self._Popen(self)
File "C:\Program Files\Python35\lib\multiprocessing\context.py", line 313, in _Popen
return Popen(process_obj)
File "C:\Program Files\Python35\lib\multiprocessing\popen_spawn_win32.py", line 66, in __init__
reduction.dump(process_obj, to_child)
File "C:\Program Files\Python35\lib\multiprocessing\reduction.py", line 59, in dump
ForkingPickler(file, protocol).dump(obj)
_pickle.PicklingError: Can't pickle <function <lambda> at 0x00000000006490D0>: attribute lookup <lambda> on __main__ failed
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "C:\Program Files\Python35\lib\multiprocessing\spawn.py", line 100, in spawn_main
new_handle = steal_handle(parent_pid, pipe_handle)
File "C:\Program Files\Python35\lib\multiprocessing\reduction.py", line 86, in steal_handle
_winapi.DUPLICATE_SAME_ACCESS | _winapi.DUPLICATE_CLOSE_SOURCE)
PermissionError: [WinError 5] Access is denied
同样是从廖老师的教程中找到这儿来的,表示这个错误也可以用这种方法解决。电脑是win7 64位,python 3.5
QueueManager.register('get_task_queue', callable=lambda: task_queue)
QueueManager.register('get_result_queue', callable=lambda: result_queue)
改成以下方法:
def return_task_queue():
global task_queue
return task_queue
def return_result_queue():
global result_queue
return result_queue
QueueManager.register('get_task_queue', callable=return_task_queue)
QueueManager.register('get_result_queue', callable=return_result_queue)
第二:
创建manager时加上IP地址。
# 绑定端口5000, 设置验证码'abc':
manager = QueueManager(address=('127.0.0.1', 5000), authkey=b'abc')
第三:
整个代码用 if __name__ == '__main__':语句包起来,
并在一开始增加freeze_support()调用
最后附上完整的task_master.py
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import random, time, queue
from multiprocessing import freeze_support
from multiprocessing.managers import BaseManager
# 发送任务的队列:
task_queue = queue.Queue()
# 接收结果的队列:
result_queue = queue.Queue()
# 从BaseManager继承的QueueManager:
class QueueManager(BaseManager):
pass
def return_task_queue():
global task_queue
return task_queue
def return_result_queue():
global result_queue
return result_queue
def test():
# 把两个Queue都注册到网络上, callable参数关联了Queue对象:
# QueueManager.register('get_task_queue', callable=lambda: task_queue)
# QueueManager.register('get_result_queue', callable=lambda: result_queue)
QueueManager.register('get_task_queue', callable=return_task_queue)
QueueManager.register('get_result_queue', callable=return_result_queue)
# 绑定端口5000, 设置验证码'abc':
manager = QueueManager(address=('127.0.0.1', 5000), authkey=b'abc')
# 启动Queue:
manager.start()
# 获得通过网络访问的Queue对象:
task = manager.get_task_queue()
result = manager.get_result_queue()
# 放几个任务进去:
for i in range(10):
n = random.randint(0, 10000)
print('Put task %d...' % n)
task.put(n)
# 从result队列读取结果:
print('Try get results...')
for i in range(10):
r = result.get(timeout=10)
print('Result: %s' % r)
# 关闭:
manager.shutdown()
print('master exit.')
if __name__ == '__main__':
freeze_support()
test()
# basemanager.py
import random, time, queue, pickle
from multiprocessing.managers import BaseManager
# 发送任务队列
task_queue = queue.Queue();
# 从BaseManager继承QueueManager
class QueueManager(BaseManager):
pass
# 将两个队列注册到网络上,callable参数关联Queue对象
QueueManager.register('get_task_queue', callable=lambda: task_queue)
# 绑定端口5000, 设置验证码'abc'
manager = QueueManager(address=('127.0.0.1', 50000), authkey=b'abc')
# 启动Queue
s = manager.get_server()
s.serve_forever()
#basework.py
import random, time, queue
from multiprocessing.managers import BaseManager
class QueueManager(BaseManager):
pass
QueueManager.register('get_task_queue')
#print('Connect to server %s ...' % server_addr)
m = BaseManager(address=('127.0.0.1', 5000), authkey=b'abc')
m.connect()
# 获得通过网络访问的Queue对象
task = m.get_task_queue()
# 加入任务
task.put('hello')
报的错误是这样的
Traceback (most recent call last):
File "D:\MyProgram\python\basework.py", line 13, in <module>
m.connect()
File "D:\Mydevelop\Python34\lib\multiprocessing\managers.py", line 467, in connect
conn = Client(self._address, authkey=self._authkey)
File "D:\Mydevelop\Python34\lib\multiprocessing\connection.py", line 495, in Client
c = SocketClient(address)
File "D:\Mydevelop\Python34\lib\multiprocessing\connection.py", line 624, in SocketClient
s.connect(address)
ConnectionRefusedError: [WinError 10061] 由于目标计算机积极拒绝,无法连接。[/quote]
哥们,你的端口号写错了,一个50000,一个5000,怎么连接?# basemanager.py
import random, time, queue, pickle
from multiprocessing.managers import BaseManager
# 发送任务队列
task_queue = queue.Queue();
# 从BaseManager继承QueueManager
class QueueManager(BaseManager):
pass
# 将两个队列注册到网络上,callable参数关联Queue对象
QueueManager.register('get_task_queue', callable=lambda: task_queue)
# 绑定端口5000, 设置验证码'abc'
manager = QueueManager(address=('127.0.0.1', 50000), authkey=b'abc')
# 启动Queue
s = manager.get_server()
s.serve_forever()
#basework.py
import random, time, queue
from multiprocessing.managers import BaseManager
class QueueManager(BaseManager):
pass
QueueManager.register('get_task_queue')
#print('Connect to server %s ...' % server_addr)
m = BaseManager(address=('127.0.0.1', 5000), authkey=b'abc')
m.connect()
# 获得通过网络访问的Queue对象
task = m.get_task_queue()
# 加入任务
task.put('hello')
报的错误是这样的
Traceback (most recent call last):
File "D:\MyProgram\python\basework.py", line 13, in <module>
m.connect()
File "D:\Mydevelop\Python34\lib\multiprocessing\managers.py", line 467, in connect
conn = Client(self._address, authkey=self._authkey)
File "D:\Mydevelop\Python34\lib\multiprocessing\connection.py", line 495, in Client
c = SocketClient(address)
File "D:\Mydevelop\Python34\lib\multiprocessing\connection.py", line 624, in SocketClient
s.connect(address)
ConnectionRefusedError: [WinError 10061] 由于目标计算机积极拒绝,无法连接。
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# task.py
import random, time, Queue
from multiprocessing.managers import BaseManager
class QueueManager(BaseManager):
pass
QueueManager.register('get_task_queue')
server_addr = '10.135.90.95'
print('Connect to server %s ...' % server_addr)
m = QueueManager(address=(server_addr, 50000), authkey='abc')
m.connect()
# 获得通过网络访问的Queue对象
task = m.get_task_queue()
# 加入任务
task.put('hello')
# taskmanager.py
import random, time, Queue, pickle
from multiprocessing.managers import BaseManager
# 发送任务队列
task_queue = Queue.Queue();
# 从BaseManager继承QueueManager
class QueueManager(BaseManager):
pass
# 将两个队列注册到网络上,callable参数关联Queue对象
QueueManager.register('get_task_queue', callable=lambda: task_queue)
# 绑定端口5000, 设置验证码'abc'
manager = QueueManager(address=('', 50000), authkey='abc')
# 启动Queue
s = manager.get_server()
s.serve_forever()
from multiprocessing.managers import BaseManager
import Queue
queue = Queue.Queue()
lass QueueManager(BaseManager): pass
QueueManager.register('get_queue', callable=lambda:queue)
m = QueueManager(address=('', 50000), authkey='abracadabra')
s = m.get_server()
s.serve_forever()
from multiprocessing.managers import BaseManager
class QueueManager(BaseManager): pass
QueueManager.register('get_queue')
m = QueueManager(address=('foo.bar.org', 50000), authkey='abracadabra')
m.connect()
queue = m.get_queue()
queue.put('hello')
这两段代码如果在同一台机器上运行会发生 下面这个错误
Traceback (most recent call last):
File "D:/Python/task.py", line 20, in <module>
m.connect()
File "C:\Python27\lib\multiprocessing\managers.py", line 500, in connect
conn = Client(self._address, authkey=self._authkey)
File "C:\Python27\lib\multiprocessing\connection.py", line 175, in Client
answer_challenge(c, authkey)
File "C:\Python27\lib\multiprocessing\connection.py", line 428, in answer_challenge
message = connection.recv_bytes(256) # reject large message
EOFError
初学这个,请见谅,再次感谢!
Traceback (most recent call last):
File "D:\Python\taskmanager.py", line 37, in <module>
manager.start()
File "C:\Python27\lib\multiprocessing\managers.py", line 528, in start
self._address = reader.recv()
EOFError
今天学习解析XML
导包的时候竟然都出发问题了
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import sys
sys.path.append('C:\\Python27\\Lib\\xml\\parsers\\expat.py')
print sys.path
from xml.parsers.expat import ParserCreate
错误如下:
Traceback (most recent call last):
File "D:\Python\xml.py", line 6, in <module>
from xml.parsers.expat import ParserCreate
File "D:\Python\xml.py", line 6, in <module>
from xml.parsers.expat import ParserCreate
ImportError: No module named parsers.expat
不知道为什么。。。。。 太郁闷了
Traceback (most recent call last):
File "D:\Python\taskmanager.py", line 37, in <module>
manager.start()
File "C:\Python27\lib\multiprocessing\managers.py", line 528, in start
self._address = reader.recv()
EOFError
这个是不是还是在做pickle时发生的问题呢?