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import re
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 = 25012
number = 8
visible = True
solution = '''\
a = int(input('Vpiši a: '))
b = int(input('Vpiši b: '))
c = int(input('Vpiši c: '))
d = b**2 - 4 * a * c
if d < 0:
print('Enačba nima realnih rešitev.')
elif d == 0:
x = -b / (2 * a)
print('Enačba ima eno realno rešitev:', x)
else:
x1 = (-b + pow(d, 1/2)) / (2 * a)
x2 = (-b - pow(d, 1/2)) / (2 * a)
print('Enačba ima dve realni rešitvi:', x1, 'in', x2)
'''
hint_type = {
'if_clause': Hint('if_clause'),
'printing': Hint('printing'),
'no_input_call' : Hint('no_input_call'),
'final_hint': Hint('final_hint')
}
def test(python, code, aux_code=''):
tokens = get_tokens(code)
test_in = [
(None, '1\n2\n1\n'),
(None, '1\n2\n0\n'),
(None, '1\n2\n2\n')
]
test_out = [
'Enačba ima eno realno rešitev: -1.0',
'Enačba ima dve realni rešitvi: 0.0 in -2.0',
'Enačba nima realnih rešitev.'
]
# List of outputs: (expression result, stdout, stderr, exception).
answers = python(code=aux_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 output.rstrip().endswith(correct):
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 != None:
hints.append({'id': 'problematic_test_case', 'args': {'testin': str(tin), 'testout': str(tout)}})
else:
hints.append({'id' : 'final_hint'})
return passed, hints
def hint(python, code, aux_code=''):
# run one test first to see if there are any exceptions
test_in = [(None, '1\n2\n1\n')]
answer = python(code=aux_code+code, inputs=test_in, timeout=1.0)
exc = get_exception_desc(answer[0][3])
if exc: return exc
tokens = get_tokens(code)
# if input is not present in code, student needs to learn about input
if not has_token_sequence(tokens, ['input']):
return [{'id': 'no_input_call'}]
if not has_token_sequence(tokens, ['if']):
return [{'id' : 'if_clause'}]
# student is not using print function
if not has_token_sequence(tokens, ['print']):
return [{'id' : 'printing'}]
return None
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