First time to use paddle and not very familiar, so I try to do as the quickstart doc step by step.
http://www.paddlepaddle.org/doc/demo/quick_start/index_en.html
http://www.paddlepaddle.org/doc_cn/index.html
Environment: ubuntu 12.04 and install cpu-deb.
I have finished data preparation step and when i try to use dataprovider_bow.py script, it throw the error as my title,here is the log:

cloud@cloud-virtual-machine:~/paddle-git/demo/quick_start$ python dataprovider_bow.py
Traceback (most recent call last):
File "dataprovider_bow.py", line 15, in
from paddle.trainer.PyDataProvider2 import *
ImportError: No module named paddle.trainer.PyDataProvider2

What's the problem and how can i get that package imported correctly?? And i doubt if i install paddlepaddle correctly, how can i conform that??thx~