Implement the farmer, fox, goose, grain problem with start on one side of the river and goal the other side as a simple-reflex agent design.

#Farmer must move his items from one side of river (a) to the other side of river (b) #His boat can only take one an at a time #He cannot leave the fox and goose unattended and cannot leave #goose and grain unattended #he starts the process in a

def Move_a2b_with_item (item): a.remove (item) b.append (item) a.remove ("farmer") b.append ("farmer")

def Move_b2a_with_item(item): b.remove (item) a.append (item) b.remove ("farmer") a.append ("farmer")

def Move_a2b_alone (): a.remove ("farmer") b.append ("farmer")

def Move_b2a_alone (): b.remove ("farmer") a.append ("farmer") def Mova2b ():

if ("farmer" in a and "goose" in a and "fox" not in a and "grain" not in a): Move_a2b_with_item ("goose") print (a) print (b) print ("farmer has arrived with goose to b")

elif ("farmer" in a and "fox" in a and "grain" in a and "goose" not in a): Move_a2b_with_item ("fox") print (a) print (b) print ("farmer has arrived with fox to b") elif ("farmer" in a and "goose" in a and "grain" in a and "fox" not in a): Move_a2b_with_item ("grain") print (a) print (b) print ("farmer has arrived with grain to b") elif ("farmer" in a and "fox" in a and "goose" in a and "grain" in a): Move_a2b_with_item ("goose") print (a) print (b) print ("farmer has arrived with goose to b")

def Movb2a (): if ("farmer" in b and "goose" in b and "fox" in b and "grain" not in b): Move_b2a_with_item ("goose") print (a) print (b) print ("farmer has arrived back to a with goose") elif ("farmer" in b and "fox" in b and "grain" in b and "goose" not in b): Move_b2a_alone () print (a) print (b) print ("farmer has arrived back to a alone") elif ("farmer" in b and "goose" in b and "fox" not in b and "grain" not in b): Move_b2a_alone () print (a) print (b) print ("farmer has arrived back to a alone")

#initial state is where farmer and his position are on a and nothing on b a = ["farmer", "fox", "goose", "grain"] b=[] print (a) print (b)

#Start process by farmer moving an item from a to b #then coming back to get more items #continue until no more items left in a

while len (a) !=0: Mova2b () Movb2a () print ("farmer has transferred all items from a to b intact")

#while len (a) != 0: # b.append ('farmer') # b.extend ('goose') # a.clear()

# a.remove ("farmer") # a.remove ("goose") # print (a) # print (b) # b.remove ("farmer") # a.extend ("farmer") # print (a) # print (b) # b.extend ("farmer", "fox") # a.remove ("farmer", "fox") # print (a) # print (b) # a.extend ("farmer", "goose") # b.remove ("farmer", "goose") # print (a) # print (b) # b.extend ("farmer", "fox") # a.remove ("farmer", "fox") print (a) print (b)