您使用的是Homebrew或MacPorts吗？正如@JFSebastian所说，听起来你在混合OS X附带的默认python和通过包管理器安装的问题时会出现问题...尝试 / usr / local / opt / python /bin/python2.7 -m scrapy 并查看是否抛出 ImportError 。

Are you using Homebrew or MacPorts or something? As @J.F.Sebastian said, it sounds like you are having issues mixing the default python that comes with OS X, and one that is installed via a package manager... Try /usr/local/opt/python/bin/python2.7 -m scrapy and see if that throws an ImportError.

如果可行，那么您可能需要考虑将那个 python可执行文件作为默认值。类似别名python2.7 = / usr / local / opt / python / bin / python2.7 然后总是使用 python2.7 而不是默认的 python 。你也可以将 python 指向 / urs / local ... 位，但是你不会有如果您出于某种原因需要它，可以轻松访问系统（OS X提供的）python。

If that works, then you may want to consider making that python executable your default. Something like alias python2.7=/usr/local/opt/python/bin/python2.7 and then always use python2.7 instead of the default python. You can likewise just point python to the /urs/local... bit, but then you won't have easy access to the system (OS X-supplied) python if you ever needed it for some reason.