+= to Assign Task to Resource Not Working about pyschedule

[snow-abstraction]

I just ran the bike show notebook using Python 3.7 and pyschedule 0.2.34 without any problems. I don't think me having Python 3.7 made any difference.

Which version of pyschedule are you using?

Just to eliminate any issues with corrupt state in the jupyter-notebook, could you create a new notebook a run the following in one cell

from pyschedule import Scenario, solvers, plotters
S = Scenario('bike_paint_shop', horizon=10)
Alice = S.Resource('Alice')
Bob = S.Resource('Bob')
green_paint, red_paint = S.Task('green_paint', length=2), S.Task('red_paint', length=2)
green_post, red_post = S.Task('green_post'), S.Task('red_post')
S += green_paint < green_post, red_paint + 1 <= red_post
green_paint += Alice|Bob
green_post += Alice|Bob
red_paint += Alice|Bob
red_post += Alice|Bob

and post the output?