joblib/joblib — pull request #41 by marekrud (2012-07-17 13:45:58+00:00)
Title: FIX: hasher for ndarray with object dtype

Hi

I have noticed that hashing of ndarrays with object dtype was not reproducible and resulted in unnecessary calls to functions.

Please check this example:
```python
hashlib.md5( np.getbuffer(np.array([np.arange(i) for i in range(5)], dtype=object)) ).hexdigest()
```
Every time it gives different hash.

I have made a commit to bypass ndarrays containing objects in NumpyHasher. They should be pickled as regular objects.

Cheers
Marek

PS It's my first pull request on github, so please let me know, if I could improve something for the next time. Thanks.