1.安裝pip

sudo easy_install pip

2.安裝Scrapy

sudo pip install Scrapy

此時遇到以下錯誤

Found existing installation: six 1.4.1

    DEPRECATION: Uninstalling a distutils installed project (six) has been deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project.

    Uninstalling six-1.4.1:

Exception:

Traceback (most recent call last):

  File "/Library/Python/2.7/site-packages/pip/basecommand.py", line 215, in main

    status = self.run(options, args)

  File "/Library/Python/2.7/site-packages/pip/commands/install.py", line 342, in run

    prefix=options.prefix_path,

  File "/Library/Python/2.7/site-packages/pip/req/req_set.py", line 778, in install

    requirement.uninstall(auto_confirm=True)

  File "/Library/Python/2.7/site-packages/pip/req/req_install.py", line 754, in uninstall

    paths_to_remove.remove(auto_confirm)

  File "/Library/Python/2.7/site-packages/pip/req/req_uninstall.py", line 115, in remove

    renames(path, new_path)

  File "/Library/Python/2.7/site-packages/pip/utils/__init__.py", line 267, in renames

    shutil.move(old, new)

  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 302, in move

    copy2(src, real_dst)

  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 131, in copy2

    copystat(src, dst)

  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 103, in copystat

    os.chflags(dst, st.st_flags)

OSError: [Errno 1] Operation not permitted: '/tmp/pip-3MATMR-uninstall/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/six-1.4.1-py2.7.egg-info'

在查詢github上的解決方法之後，發現這似乎是El-Capitan系統的一個通病。辦法就是 pip install scrapy --ignore-installed six。如果出現許可權問題的話，就修改程式碼為sudo -H pip install scrapy --ignore-installed six。

然而執行之後輸入scrape，提示ImportError: cannot import name xmlrpc_client

又試了github上另外一個方法

sudo pip install six

在執行第2個命令時提示

rm: /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/six-1.4.1-py2.7.egg-info: Operation not permitted

rm: /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/six.py: Operation not permitted

rm: /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/six.pyc: Operation not permitted

原來在El-Capitan系統上，six無法刪除，於是使用

sudo pip install scrapy --upgrade --ignore-installed six