another pass on Interact example notebooks

[minrk]

forgot to check Lorenz before merging the interact PR

and change the w.kwargs example in Interact to one without image data

[takluyver]

GH doesn't show diffs for these, and reviewing notebook diffs is a pain anyway. I'm just going to merge this, and make further PRs for anything I think should change.

[pleabargain]

git 25Apr
running Lorenz Differential Equations

I get this error:

File "", line 12
def lorenz_deriv((x, y, z), t0, sigma=sigma, beta=beta, rho=rho):
^
SyntaxError: invalid syntax

[takluyver]

@pleabargain : Yep, that syntax was dropped for Python 3. Do you want to open a new issue for it?

[pleabargain]

Well, I'm going through the notebooks and testing/playing with them. I've found that many of them have undocumented dependencies and don't work out of the box.

In the case of the Lorenz Differential Equations notebook is shipping with ipython2 but it doesn't work with python3. Maybe include a warning to the users that this example will NOT work OR include a different cell for pytho2.x users and python3.x users?

[takluyver]

We mostly try to make the same examples work on Python 2 and Python 3 - this one must have just been missed.