【python】scrapy相关

目前scrapy还不支持python3，python2.7与python3.5共存时安装scrapy后，执行scrapy后报错

Traceback (most recent call last):
       File "/Library/Frameworks/Python.framework/Versions/3.5/bin/scrapy", line 9, in <module>
          load_entry_point('Scrapy==1.0.1', 'console_scripts', 'scrapy')()
       File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/scrapy/cmdline.py", line 122, in execute
          cmds = _get_commands_dict(settings, inproject)
       File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/scrapy/cmdline.py", line 46, in _get_commands_dict
          cmds = _get_commands_from_module('scrapy.commands', inproject)
       File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/scrapy/cmdline.py", line 29, in _get_commands_from_module
          for cmd in _iter_command_classes(module):
       File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-     packages/scrapy/cmdline.py", line 21, in _iter_command_classes
    for obj in vars(module).itervalues():
    AttributeError: 'dict' object has no attribute 'itervalues'

解决方法

sudo pip install scrapy==1.1.0rc1

在（10.11.3 El capitan上）安装后发现six版本过低，于是

sudo easy_install "six>=1.5.2"

或者

sudo -H pip install Scrapy --upgrade --ignore-installed six