我知道安装scrapy要先安装w3lib，所以我先安装了w3lib，但是当我在python ide中导入scrapy时，程序崩溃了。
错误：
creating Twisted.egg-info
writing requirements to Twisted.egg-info\requires.txt
writing Twisted.egg-info\PKG-INFO
writing top-level names to Twisted.egg-info\top_level.txt
writing dependency_links to Twisted.egg-info\dependency_links.txt
writing manifest file 'Twisted.egg-info\SOURCES.txt'
warning: manifest_maker: standard file '-c' not found
reading manifest file 'Twisted.egg-info\SOURCES.txt'
writing manifest file 'Twisted.egg-info\SOURCES.txt'
copying twisted\internet\_sigchld.c -> build\lib.win-amd64-2.7\twisted\internet
creating build\lib.win-amd64-2.7\twisted\internet\iocpreactor\iocpsupport
copying twisted\internet/iocpreactor/iocpsupport\iocpsupport.c -> build\lib.win-amd64-2.7\twisted\internet/iocpreactor/i
ocpsupport
copying twisted\internet/iocpreactor/iocpsupport\winsock_pointers.c -> build\lib.win-amd64-2.7\twisted\internet/iocpreac
tor/iocpsupport
copying twisted\python\_epoll.c -> build\lib.win-amd64-2.7\twisted\python
copying twisted\python\_initgroups.c -> build\lib.win-amd64-2.7\twisted\python
copying twisted\python\sendmsg.c -> build\lib.win-amd64-2.7\twisted\python
copying twisted\runner\portmap.c -> build\lib.win-amd64-2.7\twisted\runner
copying twisted\test\raiser.c -> build\lib.win-amd64-2.7\twisted\test
running build_ext
怎么了？
这是我在ubuntu上安装scrapy的方法：
sudo apt-get update
sudo apt-get install python-pip build-essential python-dev libxslt-dev libxml2-dev
sudo -H pip install Scrapy
scrapy version
解决我的问题最重要的是sudo -H pip install Scrapy特别是-H flag.
我还退出了终端并启动了一个新终端以确保所有环境变量都设置正确
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