title: Syntax error while trying to run scrapy crawl on Mac?
body: <p>I installed Scrapy as suggested on Scrapy.org, installing Xcode, homebrew, and then using the command "pip3 install scrapy". </p>
  
  <p>I also used "sudo easy_install pip" after a few errors with the pip command. </p>
  
  <p>Now I'm getting this <code>SyntaxError</code> whenever I try running my FirstSpider, <code>scrapy crawl FirstSpider</code>: </p>
  
  <pre><code>  File "/usr/local/lib/python3.7/site-packages/twisted/conch/manhole.py", line 154
      def write(self, data, async=False):
                                ^
  SyntaxError: invalid syntax
  </code></pre>
  
  <p>Can anyone explain what's happening or how to solve it?</p>
  
  <p>Full error report: </p>
  
  <pre><code>$ scrapy crawl FirstSpider
  2018-08-30 23:14:58 [scrapy.utils.log] INFO: Scrapy 1.5.1 started (bot: Example)
  2018-08-30 23:14:58 [scrapy.utils.log] INFO: Versions: lxml 4.2.4.0, libxml2 2.9.8, cssselect 1.0.3, parsel 1.5.0, w3lib 1.19.0, Twisted 18.7.0, Python 3.7.0 (default, Aug 22 2018, 15:22:33) - [Clang 9.1.0 (clang-902.0.39.2)], pyOpenSSL 18.0.0 (OpenSSL 1.1.0i  14 Aug 2018), cryptography 2.3.1, Platform Darwin-17.7.0-x86_64-i386-64bit
  2018-08-30 23:14:58 [scrapy.crawler] INFO: Overridden settings: {'BOT_NAME': 'Example', 'NEWSPIDER_MODULE': 'Example.spiders', 'ROBOTSTXT_OBEY': True, 'SPIDER_MODULES': ['Example.spiders']}
  Traceback (most recent call last):
    File "/usr/local/lib/scrapy", line 11, in &lt;module&gt;
      sys.exit(execute())
    File "/usr/local/lib/python3.7/site-packages/scrapy/cmdline.py", line 150, in execute
      _run_print_help(parser, _run_command, cmd, args, opts)
    File "/usr/local/lib/python3.7/site-packages/scrapy/cmdline.py", line 90, in _run_print_help
      func(*a, **kw)
    File "/usr/local/lib/python3.7/site-packages/scrapy/cmdline.py", line 157, in _run_command
      cmd.run(args, opts)
    File "/usr/local/lib/python3.7/site-packages/scrapy/commands/crawl.py", line 57, in run
      self.crawler_process.crawl(spname, **opts.spargs)
    File "/usr/local/lib/python3.7/site-packages/scrapy/crawler.py", line 170, in crawl
      crawler = self.create_crawler(crawler_or_spidercls)
    File "/usr/local/lib/python3.7/site-packages/scrapy/crawler.py", line 198, in create_crawler
      return self._create_crawler(crawler_or_spidercls)
    File "/usr/local/lib/python3.7/site-packages/scrapy/crawler.py", line 203, in _create_crawler
      return Crawler(spidercls, self.settings)
    File "/usr/local/lib/python3.7/site-packages/scrapy/crawler.py", line 55, in __init__
      self.extensions = ExtensionManager.from_crawler(self)
    File "/usr/local/lib/python3.7/site-packages/scrapy/middleware.py", line 58, in from_crawler
      return cls.from_settings(crawler.settings, crawler)
    File "/usr/local/lib/python3.7/site-packages/scrapy/middleware.py", line 34, in from_settings
      mwcls = load_object(clspath)
    File "/usr/local/lib/python3.7/site-packages/scrapy/utils/misc.py", line 44, in load_object
      mod = import_module(module)
    File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/importlib/__init__.py", line 127, in import_module
      return _bootstrap._gcd_import(name[level:], package, level)
    File "&lt;frozen importlib._bootstrap&gt;", line 1006, in _gcd_import
    File "&lt;frozen importlib._bootstrap&gt;", line 983, in _find_and_load
    File "&lt;frozen importlib._bootstrap&gt;", line 967, in _find_and_load_unlocked
    File "&lt;frozen importlib._bootstrap&gt;", line 677, in _load_unlocked
    File "&lt;frozen importlib._bootstrap_external&gt;", line 728, in exec_module
    File "&lt;frozen importlib._bootstrap&gt;", line 219, in _call_with_frames_removed
    File "/usr/local/lib/python3.7/site-packages/scrapy/extensions/telnet.py", line 12, in &lt;module&gt;
      from twisted.conch import manhole, telnet
    File "/usr/local/lib/python3.7/site-packages/twisted/conch/manhole.py", line 154
      def write(self, data, async=False):
                                ^
  SyntaxError: invalid syntax
  </code></pre>