win10上python3.7安装scrapy1.5.1出错，求解答

安装完可以正常显示，所需插件也都安装上了，但是执行“scrapy bench”测试的时候报了如下的错误，有没有大神知道怎么回事的，在线等，挺急！！！


2018-09-19 17:09:49 [scrapy.utils.log] INFO: Scrapy 1.5.1 started (bot: scrapybot)
2018-09-19 17:09:49 [scrapy.utils.log] INFO: Versions: lxml 4.2.4.0, libxml2 2.9.7, cssselect 1.0.3, parsel 1.5.0, w3lib 1.19.0, Twisted 18.7.0, Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:59:51) [MSC v.1914 64 bit (AMD64)], pyOpenSSL 18.0.0 (OpenSSL 1.1.0h 27 Mar 2018), cryptography 2.3, Platform Windows-10-10.0.17134-SP0
2018-09-19 17:09:50 [scrapy.crawler] INFO: Overridden settings: {'CLOSESPIDER_TIMEOUT': 10, 'LOGSTATS_INTERVAL': 1, 'LOG_LEVEL': 'INFO'}
Traceback (most recent call last):
File "e:\python37\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "e:\python37\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "E:\Python37\Scripts\scrapy.exe\__main__.py", line 9, in <module>
File "e:\python37\lib\site-packages\scrapy\cmdline.py", line 150, in execute
_run_print_help(parser, _run_command, cmd, args, opts)
File "e:\python37\lib\site-packages\scrapy\cmdline.py", line 90, in _run_print_help
func(*a, **kw)
File "e:\python37\lib\site-packages\scrapy\cmdline.py", line 157, in _run_command
cmd.run(args, opts)
File "e:\python37\lib\site-packages\scrapy\commands\bench.py", line 25, in run
self.crawler_process.crawl(_BenchSpider, total=100000)
File "e:\python37\lib\site-packages\scrapy\crawler.py", line 170, in crawl
crawler = self.create_crawler(crawler_or_spidercls)
File "e:\python37\lib\site-packages\scrapy\crawler.py", line 198, in create_crawler
return self._create_crawler(crawler_or_spidercls)
File "e:\python37\lib\site-packages\scrapy\crawler.py", line 203, in _create_crawler
return Crawler(spidercls, self.settings)
File "e:\python37\lib\site-packages\scrapy\crawler.py", line 55, in __init__
self.extensions = ExtensionManager.from_crawler(self)
File "e:\python37\lib\site-packages\scrapy\middleware.py", line 58, in from_crawler
return cls.from_settings(crawler.settings, crawler)
File "e:\python37\lib\site-packages\scrapy\middleware.py", line 34, in from_settings
mwcls = load_object(clspath)
File "e:\python37\lib\site-packages\scrapy\utils\misc.py", line 44, in load_object
mod = import_module(module)
File "e:\python37\lib\importlib\__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "e:\python37\lib\site-packages\scrapy\extensions\telnet.py", line 12, in <module>
from twisted.conch import manhole, telnet
File "e:\python37\lib\site-packages\twisted\conch\manhole.py", line 154
def write(self, data, async=False):
^
SyntaxError: invalid syntax