I am studying Cassandra by its document.
But when I use "pip install cassandra-driver" to install cassandra-driver ,failed like this:

```html
weikairen2@weikairen2-virtual-machine:~$ pip install cassandra-driver
Collecting cassandra-driver
  Using cached cassandra-driver-3.7.0.tar.gz
Requirement already satisfied (use --upgrade to upgrade): six>=1.6 in ./.local/lib/python2.7/site-packages (from cassandra-driver)
Requirement already satisfied (use --upgrade to upgrade): futures in ./.local/lib/python2.7/site-packages (from cassandra-driver)
Building wheels for collected packages: cassandra-driver
  Running setup.py bdist_wheel for cassandra-driver ... 

^Z
[1]+  已停止               pip install cassandra-driver
weikairen2@weikairen2-virtual-machine:~$ ls
cassandra               jdk              公共的  图片  音乐
cassandra-driver-3.7.0  pycharm          模板    文档  桌面
examples.desktop        PycharmProjects  视频    下载
weikairen2@weikairen2-virtual-machine:~$ cd cassandra-driver-3.7.0
weikairen2@weikairen2-virtual-machine:~/cassandra-driver-3.7.0$ ls
cassandra                  ez_setup.py  MANIFEST.in  README.rst  setup.py
cassandra_driver.egg-info  LICENSE      PKG-INFO     setup.cfg
weikairen2@weikairen2-virtual-machine:~/cassandra-driver-3.7.0$ python setup.py install

^Z
[2]+  已停止               python setup.py install
weikairen2@weikairen2-virtual-machine:~/cassandra-driver-3.7.0$ python setup.py build
```

as you can see,there is no response 
and I have to stop it by ctrl+z

I also tried manul install 
no response again

So where is the error? How can I fix it?