我运行pip install Scrapy，一切似乎都下载正常，但安装最终失败。
权限是否存在某种问题？我是新手，所以非常感谢任何帮助！
精简终端输出：
...
running install_egg_info
running egg_info
writing requirements to Scrapy.egg-info/requires.txt
writing Scrapy.egg-info/PKG-INFO
writing top-level names to Scrapy.egg-info/top_level.txt
writing dependency_links to Scrapy.egg-info/dependency_links.txt
warning: manifest_maker: standard file '-c' not found
reading manifest file 'Scrapy.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
no previously-included directories found matching 'docs/build'
writing manifest file 'Scrapy.egg-info/SOURCES.txt'
Copying Scrapy.egg-info to /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/Scrapy-0.16.3-py2.7.egg-info
running install_scripts
copying build/scripts-2.7/scrapy -> /Library/Frameworks/Python.framework/Versions/2.7/bin
error: /Library/Frameworks/Python.framework/Versions/2.7/bin/scrapy: Permission denied
----------------------------------------
Command /Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python -c "import setuptools;__file__='/Users/pavelfage/build/Scrapy/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --single-version-externally-managed --record /var/folders/x6/wf5kq24j109dnkhgjcs822ym0000gn/T/pip-QgV9nv-record/install-record.txt failed with error code 1