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# coding=utf-8
from python.util import has_token_sequence, string_almost_equal
from server.hints import Hint, HintSequence
id = 189
group = 'introduction'
number = 2
visible = True
solution = '''\
a = float(input('Ocena [Ana]? '))
b = float(input('Ocena [Benjamin]? '))
c = float(input('Ocena [Cilka]? '))
print('Povpre?je:', (a + b + c) / 3)
print('Srednja vrednost:', a + b + c - min(a, b, c) - max( a, b, c))
'''
hint_type = {
'plan': Hint('plan'),
'eval_expression': Hint('eval_expression'),
'name_error': HintSequence('name_error', 4),
'unsupported_operand': HintSequence('unsupported_operand', 4),
'error': HintSequence('error', 2),
'radians': HintSequence('radians', 3),
'printing': Hint('printing'),
}
def test(python, code):
# List of inputs: (expression to eval, stdin).
test_in = [
(None, '2\n4\n5\n'),
(None, '1\n1\n4\n'),
(None, '2\n5\n1\n'),
(None, '3\n1\n1\n'),
(None, '5\n1\n5\n'),
]
test_out = [
[3.67, 4],
[2, 1],
[2.67, 2],
[1.67, 1],
[3.67, 5]
]
# 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
for output, c in zip(outputs, test_out):
if string_almost_equal(output, c[0]) and \
string_almost_equal(output, c[1]):
n_correct += 1
return n_correct, len(test_in)
def hint(python, code):
# run one test first to see if there are any exceptions
test_in = [(None, '1\n1\n4\n')]
answer = python(code=code, inputs=test_in, timeout=1.0)
exc = answer[0][3]
# if have an exception!
if exc:
if 'NameError' in exc:
return [{'id':'name_error', 'args': {'message': exc}}]
elif 'TypeError' in exc:
return [{'id':'type_error', 'args': {'message': exc}}]
else:
return [{'id':'error', 'args': {'message': exc}}]
# show plan if student is lost
# a) empty progam
# b) there is not input (we can do it here, since we have no input hint)
if not code or (not has_token_sequence(code, ['input'])):
return [{'id': 'plan'}]
# Help to compute average (if /3 is not program)
if not has_token_sequence(code, ['/', '3']):
return [{'id': 'average'}]
# If student is not using functions min or max, then he is
# not computing median in the right way
if not has_token_sequence(code, ['min']) or \
not has_token_sequence(code, ['max']):
return [{'id': 'median'}]
# program is working correctly for mean but not for median
if '2' in answer[0][1] and '1' not in answer[0][1]:
return [{'id': 'median'}]
# student is not using print function
if not has_token_sequence(code, ['print']):
return [{'id' : 'printing'}]
return None
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