Creating a new workspace

edit

Hi , I am trying to create a new workspace in Fuerte distribution , I execute the following command

rosws init ~/fuerte_workspace /opt/ros/fuerte """ 
But the Output for this command is """" 
Traceback (most recent call last):
  File "/usr/local/bin/rosws", line 52, in <module>
    import rosinstall.rosws_cli
  File "/usr/local/lib/python2.7/dist-packages/rosinstall/__init__.py", line 33, in <module>
    import wstool.helpers
  File "/usr/local/lib/python2.7/dist-packages/wstool/helpers.py", line 37, in <module>
    from wstool.config_elements import SetupConfigElement
  File "/usr/local/lib/python2.7/dist-packages/wstool/config_elements.py", line 38, in <module>
    from vcstools.vcs_abstraction import get_vcs_client
  File "/usr/local/lib/python2.7/dist-packages/vcstools/__init__.py", line 44, in <module>
    from vcstools.svn import SvnClient
  File "/usr/local/lib/python2.7/dist-packages/vcstools/svn.py", line 44, in <module>
    import dateutil.parser  # For parsing date strings
  File "/usr/local/lib/python2.7/dist-packages/dateutil/parser.py", line 24, in <module>
    from six import text_type, binary_type, integer_types
ImportError: No module named six

How Can I Solve this ??? Plz;I need an urgent Solution for this ...