python-3.x - OS X 上的 eventlet？

Question

我不确定 Eventlet 是否适用于 OS X，因为 epolls 不支持 OS X。

Traceback (most recent call last):
  File "/usr/local/Cellar/python/3.7.3/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 917, in _bootstrap_inn
er
    self.run()
  File "/usr/local/Cellar/python/3.7.3/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 865, in run
    self._target(*self._args, **self._kwargs)
  File "scraper.py", line 44, in thread_worker
    with eventlet.Timeout(60, False):
  File "/usr/local/lib/python3.7/site-packages/eventlet/timeout.py", line 55, in __init__
    self.start()
  File "/usr/local/lib/python3.7/site-packages/eventlet/timeout.py", line 66, in start
    self.timer = get_hub().schedule_call_global(
  File "/usr/local/lib/python3.7/site-packages/eventlet/hubs/__init__.py", line 117, in get_hub
    use_hub()
  File "/usr/local/lib/python3.7/site-packages/eventlet/hubs/__init__.py", line 71, in use_hub

    mod = get_default_hub()
  File "/usr/local/lib/python3.7/site-packages/eventlet/hubs/__init__.py", line 40, in get_default_hub
    return eventlet.hubs.epolls
AttributeError: module 'eventlet.hubs' has no attribute 'epolls'

Answer 1

Eventlet 不是特定于平台的，但它的集线器可以。 epolls hub 仅适用于 Linux，它是 Eventlet 的默认设置，但您可以更改它。查询 Eventlet's hubs docs选择适合您的情况并调用 eventlet.hubs.use_hub在执行任何 IO 之前。

示例，使用独立于平台的 selects中心:

import eventlet
eventlet.hubs.use_hub("selects")