tvtk.Points ``__getitem__`` does not accept python long integers

[itziakos]

The following example demonstrates the issue

In [10] points = tvtk.Points()

In [11]: points.insert_next_point((0,1,2))
Out[11]: 0L

In [12]: points[0]
Out[12]: (0.0, 1.0, 2.0)

In [13]: points[0L]  # raises TypeError

[itziakos]

moved issue to mayavi