ImportError: No module named rootpy.tree

[rookie_root]

Hello,

I am trying to run a simple script in python and I get this error:

ImportError: No module named rootpy.tree

I have this in my code:
import ROOT
from rootpy.tree import TreeChain
from sys import argv

Any advice how to solve this? (addtion to the original post: I already have rootpy installed)

Thanks!

[sbinet]

rootpy doesn’t come with ROOT.
You have to install it from http://www.rootpy.org/

[rookie_root]

Oh, I see. Thanks a lot!

[rookie_root]

Sorry I misread that yesterday. I do have rootpy installed!

[sbinet]

ok, so…

• on which platform/OS are you?
• where and how did you install it? which version?
• with which python VM ? (py2, py3) (do you have multiple python installations?)
• is there a python VM where this:

  import rootpy
  

  works? (and if it does, what does print(rootpy.__file__) show?)
• what’s your $PYTHONPATH ?

[rookie_root]

• MAC OSX 10.7.5
• I installed it a while ago via macports, the python version is 2.7.1
• $PYTHONPATH is /usr/bin/python

I have run some scripts before, but this particular one uses rootpy.tree (from rootpy.tree import TreeChain))and this seems to be the problem…