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from operator import itemgetter
import socket
import prolog.engine
import prolog.util
from server.hints import Hint
import server.problems
id = 10002
number = 20
visible = True
facts = 'mondial'
solution = '''\
all_capitals(List) :-
findall(Capital, country(_, _, Capital, _, _, _), List).
'''
hint_type = {
}
test_cases = [
('all_capitals(X), length(X, L)', [{'L': '244'}]),
]
def test(code, aux_code):
n_correct = 0
engine_id = None
try:
engine_id, output = prolog.engine.create(code=code+aux_code, timeout=5.0)
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, inference_limit=None):
n_correct += 1
except socket.timeout:
pass
finally:
if engine_id:
prolog.engine.destroy(engine_id)
hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_cases)}}]
if n_correct == len(test_cases):
hints += [{'id': 'final_hint'}]
return n_correct, len(test_cases), hints
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