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hanoi.py
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def isDifferent(pair):
a1, a2 = pair
return a1 != a2
def lmap(func, *iterable):
return list(map(func, *iterable))
def lfilter(func, *iterable):
return list(filter(func, *iterable))
def move_no_empty(disc, peg1, peg2, d_on1, d_on2):
args = {'disc': disc, 'peg1': peg1,
'd_on1': d_on1, 'peg2': peg2, 'd_on2': d_on2}
s_name = "Name: m_{disc}_{peg1}_on_{d_on1}_{peg2}_on_{d_on2}\n".format(
**args)
s_pre = "pre: {disc}_at_{peg1} {disc}_top {disc}_on_{d_on1} {d_on2}_at_{peg2} {d_on2}_top\n".format(
**args)
s_add = "add: {disc}_at_{peg2} {disc}_on_{d_on2} {d_on1}_top\n".format(
**args)
s_del = "del: {disc}_at_{peg1} {disc}_on_{d_on1} {d_on2}_top\n".format(
**args)
return (s_name + s_pre + s_add + s_del)
def move_to_empty(disc, peg1, peg2, d_on1):
args = {'disc': disc, 'peg1': peg1,
'd_on1': d_on1, 'peg2': peg2}
s_name = "Name: m_{disc}_{peg1}_on_{d_on1}_{peg2}\n".format(
**args)
s_pre = "pre: {disc}_at_{peg1} {disc}_top {disc}_on_{d_on1} {peg2}_empty\n".format(
**args)
s_add = "add: {disc}_at_{peg2} {disc}_bottom {d_on1}_top\n".format(
**args)
s_del = "del: {disc}_at_{peg1} {disc}_on_{d_on1} {peg2}_empty\n".format(
**args)
return (s_name + s_pre + s_add + s_del)
def move_from_single(disc, peg1, peg2, d_on1):
args = {'disc': disc, 'peg1': peg1,
'd_on1': d_on1, 'peg2': peg2}
s_name = "Name: m_{disc}_{peg1}_{peg2}_on_{d_on1}\n".format(
**args)
s_pre = "pre: {disc}_at_{peg1} {disc}_top {disc}_bottom {d_on1}_at_{peg2} {d_on1}_top\n".format(
**args)
s_add = "add: {disc}_at_{peg2} {disc}_on_{d_on1} {peg1}_empty\n".format(
**args)
s_del = "del: {disc}_at_{peg1} {disc}_bottom {d_on1}_top\n".format(
**args)
return (s_name + s_pre + s_add + s_del)
def move_from_single_to_empty(disc, peg1, peg2):
args = {'disc': disc, 'peg1': peg1, 'peg2': peg2}
s_name = "Name: m_{disc}_{peg1}_{peg2}\n".format(
**args)
s_pre = "pre: {disc}_at_{peg1} {disc}_top {disc}_bottom {peg2}_empty\n".format(
**args)
s_add = "add: {disc}_at_{peg2} {peg1}_empty\n".format(
**args)
s_del = "del: {disc}_at_{peg1} {peg2}_empty\n".format(
**args)
return (s_name + s_pre + s_add + s_del)
def createDomainFile(domainFileName, n):
numbers = list(range(n)) # [0,...,n-1]
pegs = ['a', 'b', 'c']
# use domain_file.write(str) to write to domain_file
domain_file = open(domainFileName, 'w')
# Propositions
domain_file.write("Propositions:\n")
disc_on_disc = ["{}_on_{}".format(d1, d2)
for d1 in numbers
for d2 in numbers if d1 < d2]
disc_loc = ["{}_at_{}".format(d, p)
for d in numbers
for p in pegs]
disc_top = ["{}_top".format(d) for d in numbers]
disc_bottom = ["{}_bottom".format(d) for d in numbers]
pegs_empty = ["a_empty", "b_empty", "c_empty"]
lmap(lambda s: domain_file.write(s + ' '), disc_on_disc)
lmap(lambda s: domain_file.write(s + ' '), disc_loc)
lmap(lambda s: domain_file.write(s + ' '), disc_top)
lmap(lambda s: domain_file.write(s + ' '), disc_bottom)
lmap(lambda s: domain_file.write(s + ' '), pegs_empty)
# Actions
domain_file.write("\nActions:\n")
actions_move_no_empty = [move_no_empty(disc, peg1, peg2, d_on1, d_on2)
for disc in numbers
for peg1 in pegs
for peg2 in pegs if (peg1 != peg2)
for d_on1 in numbers if (disc < d_on1)
for d_on2 in numbers if (d_on1 != d_on2) and (disc < d_on2)]
actions_move_to_empty = [move_to_empty(disc, peg1, peg2, d_on1)
for disc in numbers
for peg1 in pegs
for peg2 in pegs if (peg1 != peg2)
for d_on1 in numbers if (disc < d_on1)]
actions_move_from_single = [move_from_single(disc, peg1, peg2, d_on1)
for disc in numbers
for peg1 in pegs
for peg2 in pegs if (peg1 != peg2)
for d_on1 in numbers if (disc < d_on1)]
actions_move_from_single_to_empty = [move_from_single_to_empty(disc, peg1, peg2)
for disc in numbers
for peg1 in pegs
for peg2 in pegs if (peg1 != peg2)]
lmap(domain_file.write, actions_move_no_empty)
lmap(domain_file.write, actions_move_to_empty)
lmap(domain_file.write, actions_move_from_single)
lmap(domain_file.write, actions_move_from_single_to_empty)
domain_file.close()
def createProblemFile(problemFileName, n):
numbers = list(range(n))
pegs = ['a', 'b', 'c']
# use problem_file.write(str) to write to problem_file
problem_file = open(problemFileName, 'w')
disc_on_disc = ["{}_on_{}".format(d1, d2)
for d1 in numbers
for d2 in numbers if (d1 == d2 - 1)]
disc_loc = ["{}_at_a".format(d) for d in numbers]
disc_top = ["0_top"]
disc_bottom = ["{}_bottom".format(n - 1)]
pegs_empty = ["b_empty", "c_empty"]
problem_file.write("Initial state: ")
lmap(lambda s: problem_file.write(s + ' '), disc_on_disc)
lmap(lambda s: problem_file.write(s + ' '), disc_loc)
lmap(lambda s: problem_file.write(s + ' '), disc_top)
lmap(lambda s: problem_file.write(s + ' '), disc_bottom)
lmap(lambda s: problem_file.write(s + ' '), pegs_empty)
disc_loc = ["{}_at_c".format(d) for d in numbers]
pegs_empty = ["a_empty", "b_empty"]
problem_file.write("\nGoal state: ")
lmap(lambda s: problem_file.write(s + ' '), disc_on_disc)
lmap(lambda s: problem_file.write(s + ' '), disc_loc)
lmap(lambda s: problem_file.write(s + ' '), disc_top)
lmap(lambda s: problem_file.write(s + ' '), disc_bottom)
lmap(lambda s: problem_file.write(s + ' '), pegs_empty)
problem_file.close()
import sys
if __name__ == '__main__':
if len(sys.argv) != 2:
print('Usage: hanoi.py n')
sys.exit(2)
n = int(float(sys.argv[1])) # number of disks
domainFileName = 'hanoi' + str(n) + 'Domain.txt'
problemFileName = 'hanoi' + str(n) + 'Problem.txt'
createDomainFile(domainFileName, n)
createProblemFile(problemFileName, n)