You shouldn't print an error message and then raise an error.  You should instead put the message into the error.

```python
    raise ImportError("The mesh module requires imports of iMesh, iBase, and"
                              " iMeshExtensions from PyTAPS")
```

However, I don't think that this try-except block is really needed here at all.  If someone tries to use this module without pytaps installed, it should just fail.