Question

我想在Windows上通过Manager（）。Queue（）发送在动态加载imp的模块中定义的数据。这可能吗？这是一个最小的测试用例来展示我的意思：

import imp
import sys
from multiprocessing import Manager

if __name__ == '__main__':
    s = """
def payload():
    print("It works!")
"""

    mod = imp.new_module('testcase')
    exec s in mod.__dict__
    sys.modules['testcase'] = mod

    payload = mod.payload
    payload()  # It works!

    m = Manager()
    queue = m.Queue()
    queue.put(payload)  # AttributeError: 'module' object has no attribute 'payload'

注意：使用imp.new_module + exec只是为了将测试用例放在一个文件中。使用imp.load_source时会引发相同的AttributeError。

注意2：此测试用例在此之前发生错误时会遗漏所有池/工作程序代码。

以下是运行上述脚本时带有完整回溯的输出：

It works!
Traceback (most recent call last):
  File "testcase.py", line 23, in <module>
    queue.put(payload)  # AttributeError: 'module' object has no attribute 'payload'
  File "<string>", line 2, in put
  File "c:\Users\Andrew\dev\python\lib\multiprocessing\managers.py", line 774, in _callmethod
    raise convert_to_error(kind, result)
multiprocessing.managers.RemoteError: 
---------------------------------------------------------------------------
Traceback (most recent call last):
  File "c:\Users\Andrew\dev\python\lib\multiprocessing\managers.py", line 240, in serve_client
    request = recv()
AttributeError: 'module' object has no attribute 'payload'
---------------------------------------------------------------------------

谢谢！

Python多处理：在Windows

0 个答案: