我怎样才能让cassandra-driver进入PYTHONPATH？

Question

我正在尝试用Datomic设置Cassandra，当我运行命令cqlsh -f ~/datomic/bin/cql/cassandra-user.cql -u uname -p pword时，我得到一个错误消息：

Python: /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python
Module load path: [
'/usr/local/Cellar/cassandra/2.1.2/bin', 
'/Library/Python/2.7/site-packages/cql-1.4.0-py2.7.egg', 
'/Library/Python/2.7/site-packages/thrift-0.9.2-py2.7-macosx-10.10-intel.egg',
'/Library/Python/2.7/site-packages/ccm-2.0.2-py2.7.egg',
'/Library/Python/2.7/site-packages/tailer-0.3-py2.7.egg', 
'/Library/Python/2.7/site-packages', '/Library/Python/2.7/site-packages/psutil-2.2.0-py2.7-macosx-10.10-intel.egg', 
'/Library/Python/2.7/site-packages/pip-6.0.6-py2.7.egg', 
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip', 
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', 
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin', 
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', 
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', 
'/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python', 
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk', 
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old', 
'/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload',
'/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC', 
'/Library/Python/2.7/site-packages']

Error: No module named cassandra

我已经使用pip install cassandra-driver安装了驱动程序，并尝试使用export PYTHONPATH=$PYTHONPATH:/usr/local/lib/python2.7/site-packages将驱动程序所在的路径放在我的PYTHONPATH上。我甚至将驱动程序复制到我的路径中已经列出的一个目录中。不走运。有人能帮我克服这个障碍吗？

卡桑德拉在这里安装了自制软件/usr/local/Cellar/cassandra/2.1.2/

Datomic在这里~/datomic

cassandra-driver在这里/usr/local/lib/python2.7/site-packages

Answer 1

看起来你正在尝试使用mac系统的python发行版，是吗？虽然这没有什么问题，但建议不要使用系统发行版，而是使用brew install python安装一个单独的python。然后尝试使用pip install cql安装cqlsh，同时确保使用brew pip版本(使用which pip ->检查应指向/usr/local)。