Previously working example no longer working and no error

[brianpmarks]

Same user report for #35 but a different error. They state that the trinket used to work but now no error is shown but neither does the trinket work. Example here: https://trinket.io/embed/python/56d5bfc9c6

Forgive me if this is a known issue but I wasn't sure what exactly to report.

[eah13]

Based on a paste into my dev env, #33 shows the same behavior.

Maybe progress: moving run() to the bottom of the program gives

ExternalError: Error: Couldn't infer function to wrap on line 20 in main.py

That line is ball_color = color(200, 20, 60)

https://trinket.io/python/b7ea568e3b

[eah13]

Two things:

• why is this (seemingly valid) use of color() throwing an error? #28 should have fixed that.
• It looks like the old version of processing let you put the call to run() anywhere you want. I'm actually OK with being opinionated about it coming at the end, presuming we have to do this, but we should discuss whether a migration might make sense if we'd like to guarantee that old programs won't break. And we'll need to explain/error to the user that the run() should come at the end if that's the new requirement to avoid this for new trinkets edits.

[albertjan]

So about the run function needing to go to the end. Is because the run function is synchronous and will return when the sketch finishes.

I will investigate the automatic initialisation of a sketch on the first call to a processing.py function.