1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
# 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 = 201
group = 'while_and_if'
number = 6
visible = True
solution = '''\
artiklov = 0
vsota = 0
cena = 1
while cena != 0 and vsota < 100 and artiklov < 10:
cena = int(input('Cena: '))
vsota += cena
artiklov += 1
if cena == 0:
artiklov -= 1
print('Porabili boste', vsota, 'evrov za', artiklov, 'stvari.')
'''
hint_type = {
'printing': Hint('printing'),
'while_clause': Hint('while_clause'),
'nonumber': Hint('nonumber'),
'while_condition': Hint('while_condition'),
'final_hint': Hint('final_hint'),
'summation': Hint('summation'),
'counting': Hint('counting'),
'counting_with_0': Hint('counting_with_0'),
'problematic_test_case': Hint('problematic_test_case'),
}
def test(python, code):
# List of inputs: (expression to eval, stdin).
test_in = [
(None, '10\n5\n0\n'),
(None, '10\n5\n90\n'),
(None, '10\n5\n90\n1\n1\n0\n'),
(None, '1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n'),
(None, '1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n'),
(None, '1\n1\n1\n1\n1\n1\n1\n1\n1\n0\n'),
(None, '0\n'),
]
test_out = [
(15, 2),
(105, 3),
(105, 3),
(10, 10),
(10, 10),
(9, 9),
(0, 0)
]
# 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 all(string_almost_equal(output, correct[i]) for i in range(2)):
n_correct += 1
else:
tin = test_in[i][1]
tout = correct
passed = n_correct == len(test_in)
hints = [{'id': 'test_results', 'args': {'passed': str(n_correct), 'total': str(len(test_in))}}]
if tin:
hints.append({'id': 'problematic_test_case', 'args': {'testin': str(tin),
'sum': str(tout[0]),
'count': str(tout[1]),
}})
if passed:
hints.append({'id': 'final_hint'})
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, '10\n5\n0\n'),
(None, '10\n5\n90\n'),
(None, '2\n2\n2\n2\n2\n2\n2\n2\n2\n2\n')]
answer = python(code=code, inputs=test_in, timeout=1.0)
exc = get_exception_desc(answer[0][3])
if exc:
if 'NameError' in answer[0][3]:
return [{'id':'name_error', 'args': {'message': answer[0][3]}}]
if 'EOFError' in answer[0][3]:
exc.append({'id' : 'while_condition'})
return exc
else:
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 is not using print function
if not has_token_sequence(tokens, ['print']):
return [{'id' : 'printing'}]
# student does not print any values
if not get_numbers(answer[0][1]):
return [{'id' : 'nonumber'}]
# student's answer is not correct (three possibilities)
if not string_almost_equal(answer[0][1], 15) or \
not string_almost_equal(answer[1][1], 105) or \
not string_almost_equal(answer[2][1], 20):
return [{'id' : 'summation'}]
# student's counting of items, when last price iz zero is incorrect
if not string_almost_equal(answer[0][1], 2) and \
string_almost_equal(answer[0][1], 3):
return [{'id' : 'counting_with_0'}]
# counting in general is incorrect
if not string_almost_equal(answer[1][1], 3) or \
not string_almost_equal(answer[2][1], 10):
return [{'id' : 'counting'}]
return None
|
