monkeys.py

from paip.gps import gps

problem = {
    "start": ["at door", "on floor", "has ball", "hungry", "chair at door"],
    "finish": ["not hungry"],
    "ops": [
	{
	    "action": "climb on chair",
	    "preconds": ["chair at middle room", "at middle room", "on floor"],
	    "add": ["at bananas", "on chair"],
	    "delete": ["at middle room", "on floor"]
	},
	{
	    "action": "push chair from door to middle room",
	    "preconds": ["chair at door", "at door"],
	    "add": ["chair at middle room", "at middle room"],
	    "delete": ["chair at door", "at door"]
	},
	{
	    "action": "walk from door to middle room",
	    "preconds": ["at door", "on floor"],
	    "add": ["at middle room"],
	    "delete": ["at door"]
	},
	{
	    "action": "grasp bananas",
	    "preconds": ["at bananas", "empty handed"],
	    "add": ["has bananas"],
	    "delete": ["empty handed"]
	},
	{
	    "action": "drop ball",
	    "preconds": ["has ball"],
	    "add": ["empty handed"],
	    "delete": ["has ball"]
	},
	{
	    "action": "eat bananas",
	    "preconds": ["has bananas"],
	    "add": ["empty handed", "not hungry"],
	    "delete": ["has bananas", "hungry"]
	}
    ]
}

def main():
    start = problem['start']
    finish = problem['finish']
    ops = problem['ops']
    for action in gps(start, finish, ops):
        print action

if __name__ == '__main__':
    main()