Virtualenv不允许我在robotframework中同时使用ImageHorizo​​nLibrary和SwingLibrary

Question

我的bash_profile设置为以下内容：

export PATH=/Users/nimam/jython2.7.0/bin:/opt/local/bin:/opt/local/sbin::/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin

运行机器人框架的swinglibrary时，我需要包括jython，但我也想包括ImageHorizo​​nLibrary。但是，我目前无法运行ImageHorizo​​nLibrary。我收到以下错误。

[ ERROR ] Error in file '/Users/nimam/swinglibrary-demo/read_attributes.robot': Importing test library 'ImageHorizonLibrary' failed: ImportError: No module named ImageHorizonLibrary
Traceback (most recent call last):
  None
PYTHONPATH:
  /Users/nimam/jython2.7.0/bin
  /Users/nimam/jython2.7.0/Lib
  __classpath__
  __pyclasspath__/
  /Users/nimam/jython2.7.0/Lib/site-packages
CLASSPATH:
  /Users/nimam/jython2.7.0/jython.jar
  Rotarran-2.0.8-standalone.jar

如果我在bash_profile中注释了导出路径，它将识别ImageHorizo​​nLibrary，但不能识别SwingLibrary。我收到以下错误：

[ ERROR ] Error in file '/Users/nimam/swinglibrary-demo/read_attributes.robot': Importing test library 'SwingLibrary' failed: ImportError: No module named SwingLibrary
Traceback (most recent call last):
  None
PYTHONPATH:
  /usr/local/bin
  /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/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
  /Users/nimam/Library/Python/2.7/lib/python/site-packages
  /Library/Python/2.7/site-packages
  /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python
  /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC

我觉得我可以通过与virtualenv一起解决这个问题。请让我知道是否可以同时运行两个库。