2016-10-10 14:23:33 scrapy crawl projectName (cannot import name '_win32stdio')

D:\python3\BR16>scrapy crawl BR16B -L WARNING
Unhandled error in Deferred:
2016-10-10 14:19:05 [twisted] CRITICAL: Unhandled error in Deferred:
Traceback (most recent call last):
  File "d:\python35\lib\site-packages\scrapy\commands\crawl.py", line 57, in run
    self.crawler_process.crawl(spname, **opts.spargs)
  File "d:\python35\lib\site-packages\scrapy\crawler.py", line 163, in crawl
    return self._crawl(crawler, *args, **kwargs)
  File "d:\python35\lib\site-packages\scrapy\crawler.py", line 167, in _crawl
    d = crawler.crawl(*args, **kwargs)
  File "d:\python35\lib\site-packages\twisted\internet\defer.py", line 1274, in unwindGenerator
    return _inlineCallbacks(None, gen, Deferred())
--- <exception caught here> ---
  File "d:\python35\lib\site-packages\twisted\internet\defer.py", line 1128, in _inlineCallbacks
    result = g.send(result)
  File "d:\python35\lib\site-packages\scrapy\crawler.py", line 72, in crawl
    self.engine = self._create_engine()
  File "d:\python35\lib\site-packages\scrapy\crawler.py", line 97, in _create_engine
    return ExecutionEngine(self, lambda _: self.stop())
  File "d:\python35\lib\site-packages\scrapy\core\engine.py", line 68, in __init__
    self.downloader = downloader_cls(crawler)
  File "d:\python35\lib\site-packages\scrapy\core\downloader\__init__.py", line 88, in __init__
    self.middleware = DownloaderMiddlewareManager.from_crawler(crawler)
  File "d:\python35\lib\site-packages\scrapy\middleware.py", line 58, in from_crawler
    return cls.from_settings(crawler.settings, crawler)
  File "d:\python35\lib\site-packages\scrapy\middleware.py", line 34, in from_settings
    mwcls = load_object(clspath)
  File "d:\python35\lib\site-packages\scrapy\utils\misc.py", line 44, in load_object
    mod = import_module(module)
  File "d:\python35\lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 986, in _gcd_import
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 665, in exec_module
  File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
  File "d:\python35\lib\site-packages\scrapy\downloadermiddlewares\retry.py", line 23, in <module>
    from scrapy.xlib.tx import ResponseFailed
  File "d:\python35\lib\site-packages\scrapy\xlib\tx\__init__.py", line 3, in <module>
    from twisted.web import client
  File "d:\python35\lib\site-packages\twisted\web\client.py", line 42, in <module>
    from twisted.internet.endpoints import TCP4ClientEndpoint, SSL4ClientEndpoint
  File "d:\python35\lib\site-packages\twisted\internet\endpoints.py", line 34, in <module>
    from twisted.internet.stdio import StandardIO, PipeAddress
  File "d:\python35\lib\site-packages\twisted\internet\stdio.py", line 30, in <module>
    from twisted.internet import _win32stdio
builtins.ImportError: cannot import name ‘_win32stdio‘
2016-10-10 14:19:06 [twisted] CRITICAL:
Traceback (most recent call last):
  File "d:\python35\lib\site-packages\twisted\internet\defer.py", line 1128, in _inlineCallbacks
    result = g.send(result)
  File "d:\python35\lib\site-packages\scrapy\crawler.py", line 72, in crawl
    self.engine = self._create_engine()
  File "d:\python35\lib\site-packages\scrapy\crawler.py", line 97, in _create_engine
    return ExecutionEngine(self, lambda _: self.stop())
  File "d:\python35\lib\site-packages\scrapy\core\engine.py", line 68, in __init__
    self.downloader = downloader_cls(crawler)
  File "d:\python35\lib\site-packages\scrapy\core\downloader\__init__.py", line 88, in __init__
    self.middleware = DownloaderMiddlewareManager.from_crawler(crawler)
  File "d:\python35\lib\site-packages\scrapy\middleware.py", line 58, in from_crawler
    return cls.from_settings(crawler.settings, crawler)
  File "d:\python35\lib\site-packages\scrapy\middleware.py", line 34, in from_settings
    mwcls = load_object(clspath)
  File "d:\python35\lib\site-packages\scrapy\utils\misc.py", line 44, in load_object
    mod = import_module(module)
  File "d:\python35\lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 986, in _gcd_import
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 665, in exec_module
  File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
  File "d:\python35\lib\site-packages\scrapy\downloadermiddlewares\retry.py", line 23, in <module>
    from scrapy.xlib.tx import ResponseFailed
  File "d:\python35\lib\site-packages\scrapy\xlib\tx\__init__.py", line 3, in <module>
    from twisted.web import client
  File "d:\python35\lib\site-packages\twisted\web\client.py", line 42, in <module>
    from twisted.internet.endpoints import TCP4ClientEndpoint, SSL4ClientEndpoint
  File "d:\python35\lib\site-packages\twisted\internet\endpoints.py", line 34, in <module>
    from twisted.internet.stdio import StandardIO, PipeAddress
  File "d:\python35\lib\site-packages\twisted\internet\stdio.py", line 30, in <module>
    from twisted.internet import _win32stdio
ImportError: cannot import name ‘_win32stdio‘
D:\python3\BR16>

solutions

Scrapy can work with Python 3 on windows if you make some minor adjustments:
Copy the _win32stdio and _pollingfile to the appropriate directory under site-packages. Namely, twisted-dir\internet. Download these fromhttps://github.com/twisted/twisted/tree/trunk/twisted/internet
 URLS: https://github.com/twisted/twisted/blob/trunk/src/twisted/internet/_win32stdio.py
URLS: https://github.com/twisted/twisted/blob/trunk/src/twisted/internet/_pollingfile.py
pip install pypiwin32
Granted, this is based on my personal experience. Because the repository will certainly change in the future, readers should beware the age of this answer.
来源： http://stackoverflow.com/questions/37342603/importerror-cannot-import-name-win32stdio