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# coding=utf-8
from python.util import has_token_sequence, string_almost_equal, \
string_contains_number, get_tokens, get_numbers, get_exception_desc
from server.hints import Hint
id = 200
group = 'while_and_if'
number = 5
visible = True
solution = '''\
stanje = 0
while stanje > -100:
stanje += int(input('Sprememba '))
print('Stanje', stanje)
print('Bankrot')
'''
hint_type = {
'while_clause': Hint('while_clause'),
'while_condition': Hint('while_condition'),
}
def test(python, code):
# List of inputs: (expression to eval, stdin).
test_in = [
(None, '23\n15\n-30\n10\n100\n-200\n-50\n'),
(None, '10\n-100\n1000\n-10000\n'),
(None, '1\n2\n'),
(None, '-1000\n'),
(None, '0\n'),
]
test_out = [
(-132, True),
(-9090, True),
(3, False),
(-1000, True),
(0, False),
]
# List of outputs: (expression result, stdout, stderr, exception).
answers = python(code=code, inputs=test_in, timeout=1.0)
outputs = [ans[1] for ans in answers]
n_correct = 0
tin = None
for i, (output, correct) in enumerate(zip(outputs, test_out)):
if string_almost_equal(output, correct[0]) and \
('Bankrot' in output) == correct[1]:
n_correct += 1
else:
tin = test_in[i][1]
tout = correct
passed = n_correct == len(test_in)
hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_in)}}]
if tin:
hints.append({'id': 'problematic_test_case', 'args': {'testin': str(tin),
'sum': str(tout[0]),
'bancrupt': str(tout[1])}})
return passed, hints
def hint(python, code):
tokens = get_tokens(code)
# run one test first to see if there are any exceptions
test_in = [(None, '23\n15\n-30\n8\n10\n100\n-200\n-50\n')]
answer = python(code=code, inputs=test_in, timeout=1.0)
exc = get_exception_desc(answer[0][3])
if exc:
return exc
# student does not have while or for: instruct him on loops
if not has_token_sequence(tokens, ['while']) and \
not has_token_sequence(tokens, ['for']):
return [{'id' : 'while_clause'}]
# student's answer is not correct
if not string_almost_equal(answer[0][1], -132):
return [{'id' : 'while_condition'}]
return None
|
