Python

[fdhliakbar]

from ai_pkg.planning import PlanningProblem, Action, goal_test from ai_pkg.utils import expr

def double_tennis_problem(): initial = 'At(A, LeftBaseLine) & At(B, RightNet) & Approaching(Ball, RightBaseLine) & Team(A, B) & Team(B, A)'

goal = 'Returned(Ball) & At(a, LeftNet) & At(b, LeftNet)'

action = [
    Action('Hit(player, Ball, loc)',
           precond='Approaching(Ball, loc) & At(player, loc)',
           effect='Returned(Ball)'),

    Action('Go(player, to, loc)',
           precond='At(player, loc)',
           effect='At(player, to)'),

    Action('NoOp(player)',
           precond='',
           effect='')
]

return PlanningProblem(init=initial, goals=goal, actions=action)

if name == 'main': p = double_tennis_problem() print(goal_test(p.goals, p.init))

solution = [
    expr("Go(A, LeftNet, LeftBaseLine)"),
    expr("NoOp(A)"),
    expr("Go(B, RightBaseLine, RightNet)"),
    expr("Hit(B, Ball, RightBaseLine)")
]

for action in solution:
    p.act(action)

print(goal_test(p.goals, p.init))

[arrowandbow12]

Can you explain what the issue is and provide the packages imported above?