rootpy/rootpy — pull request #112 by ndawe (2012-12-02 06:39:03+00:00)
Title: AttributeError: 'module' object has no attribute 'TVector2' in lookup_by_name

```python
>>> t.create_buffer()
Traceback (most recent call last):
File "", line 1, in
File "/cluster/data10/endw/.local/lib/python2.7/site-packages/rootpy-dev-py2.7-linux-x86_64.egg/rootpy/tree/tree.py", line 157, in create_buffer
ignore_unsupported=ignore_unsupported))
File "/cluster/data10/endw/.local/lib/python2.7/site-packages/rootpy-dev-py2.7-linux-x86_64.egg/rootpy/tree/buffer.py", line 33, in __init__
self.__process(branches)
File "/cluster/data10/endw/.local/lib/python2.7/site-packages/rootpy-dev-py2.7-linux-x86_64.egg/rootpy/tree/buffer.py", line 75, in __process
cls = lookup_by_name(vtype)
File "/cluster/data10/endw/.local/lib/python2.7/site-packages/rootpy-dev-py2.7-linux-x86_64.egg/rootpy/__init__.py", line 150, in lookup_by_name
rootpy_cls = getattr(rootpy_module, rootpy_cls_name)
AttributeError: 'module' object has no attribute 'TVector2'
```