Python 在Anaconda环境中使用pip安装模块

我最近在RHEL6上转换到了Anaconda环境，但我需要一个不在conda存储库中的模块。所以我用pip安装它：

(gt_keys)[user@server gtkey]$ which pip
/srv/home/shared/anaconda/envs/gt_keys/bin/pip

(gt_keys)[user@server gtkey]$ pip install owslib
Downloading/unpacking owslib
Downloading OWSLib-0.8.3.tar.gz (97kB): 97kB downloaded
Running setup.py egg_info for package owslib

Requirement already satisfied (use --upgrade to upgrade): python-dateutil>=1.5 in /srv/home/shared/anaconda/lib/python2.7/site-packages (from owslib)
Requirement already satisfied (use --upgrade to upgrade): pytz in /srv/home/shared/anaconda/lib/python2.7/site-packages (from owslib)
Requirement already satisfied (use --upgrade to upgrade): pytest in /srv/home/shared/anaconda/lib/python2.7/site-packages (from owslib)
Requirement already satisfied (use --upgrade to upgrade): pytest-cov in /srv/home/shared/anaconda/lib/python2.7/site-packages (from owslib)
Requirement already satisfied (use --upgrade to upgrade): PIL in /srv/home/shared/anaconda/lib/python2.7/site-packages/PIL (from owslib)
Requirement already satisfied (use --upgrade to upgrade): cov-core>=1.6 in /srv/home/shared/anaconda/lib/python2.7/site-packages (from pytest-cov->owslib)
Requirement already satisfied (use --upgrade to upgrade): coverage>=3.4 in /srv/home/shared/anaconda/lib/python2.7/site-packages (from cov-core>=1.6->pytest-cov->owslib)
Installing collected packages: owslib
  Running setup.py install for owslib

Successfully installed owslib
Cleaning up...

但它在我的环境中不起作用：

(gt_keys)[user@server gtkey]$ which python
/srv/home/shared/anaconda/envs/gt_keys/bin/python

(gt_keys)[user@server gtkey]$ python -c 'import owslib'
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
    ImportError: No module named owslib

---

我做错了什么？

我不知道为什么，但这次成功了：

pip install owslib --allow-external PIL --allow-unverified PIL

我仍然对任何关于我的过程的评论感兴趣。昨晚失败后，今天早上我重新连接到服务器时，发生了一些奇怪的事情，这些问题得到了解决。一定是路径有问题

pip install owslib --allow-external PIL --allow-unverified PIL