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# coding=utf-8
from operator import itemgetter
import prolog.engine
import server.problems
id = 130
number = 37
visible = True
facts = None
solution = '''\
memb130(X, [X|_]).
memb130(X, [_|T]) :-
memb130(X, T).
diff([], _, []).
diff([H|T], S2, [H|D]) :-
\+ memb130(H, S2),
diff(T, S2, D).
diff([H|T], S2, D) :-
memb130(H, S2),
diff(T, S2, D).
'''
test_cases = [
('diff([], [t, e, q], X)',
[{'X': '[]'}]),
('diff([q, r, t], [], A), msort(A, X)',
[{'X': '[q, r, t]'}]),
('diff([1, 2, 3, 8, 4, 6], [6, 0, 3, 4], A), msort(A, X)',
[{'X': '[1, 2, 8]'}]),
('diff([1, 2, 3, 8, 7, 4, 6], [7, 8, 6], A), msort(A, X)',
[{'X': '[1, 2, 3, 4]'}]),
('diff([1, 8, 2, 3, 7, 5], [7], A), msort(A, X)',
[{'X': '[1, 2, 3, 5, 8]'}]),
('diff([t, w, q], [t, e, q, w, b], X)',
[{'X': '[]'}]),
]
def test(program, solved_problems):
code = (program + '\n' +
server.problems.solutions_for_problems('prolog', solved_problems))
n_correct = 0
engine_id = None
try:
engine_id, output = prolog.engine.create(code=code, timeout=1.0)
if engine_id is not None and 'error' not in map(itemgetter(0), output):
# Engine successfully created, and no syntax error in program.
for query, answers in test_cases:
if prolog.engine.check_answers(engine_id, query=query, answers=answers, timeout=1.0):
n_correct += 1
finally:
if engine_id:
prolog.engine.destroy(engine_id)
passed = n_correct == len(test_cases)
hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_cases)}}]
return passed, hints
def hint(program, solved_problems):
# TODO
return []
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