summaryrefslogtreecommitdiff
path: root/python/problems/comprehensions/isbn/common.py
blob: 47247138a92135e8ee615c248bb88391f08c9f5f (plain)
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
import re
from python.util import has_token_sequence, string_almost_equal, \
    string_contains_number, get_tokens, get_numbers, get_exception_desc, \
    all_tokens, has_comprehension, has_loop, almost_equal, get_ast
from server.hints import Hint

id = 20707
number = 7
visible = True

solution = '''\
def valid(isbn):
    return len(isbn) == 10 and sum((10 if c == 'X' else int(c)) * (10 - i) for i, c in enumerate(isbn)) % 11 == 0
'''

hint_type = {
    'final_hint': Hint('final_hint'),
    'no_comprehension': Hint('no_comprehension'),
    'has_loop': Hint('has_loop')
}

def test(python, code):
    func_name = 'valid'
    tokens = get_tokens(code)
    ast = get_ast(code)
    if not has_token_sequence(tokens, ['def', func_name]):
        return False, [{'id' : 'no_func_name', 'args' : {'func_name' : func_name}}]

    in_out = [
        ('0306406152', True),
        ('0553382578', True),
        ('0553293370', True),
        ('912115628X', True),
        ('03064061522', False),
        ('1553382578', False),
        ('91211562811', False),
    ]

    test_in = [('{0}("{1}")'.format(func_name, str(l[0])), None)
               for l in in_out]
    test_out = [l[1] for l in in_out]

    answers = python(code=code, inputs=test_in, timeout=1.0)
    n_correct = 0
    tin, tout = None, None
    for i, (ans, to) in enumerate(zip(answers, test_out)):
        corr = ans[0] == to
        n_correct += corr
        if not corr:
            tin = test_in[i][0]
            tout = to

    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), 'testout': str(tout)}})
    if passed:
        if not has_comprehension(ast):
            hints.append({'id': 'no_comprehension'})
        elif has_loop(ast):
            hints.append({'id': 'has_loop'})
        else:
            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
    answer = python(code=code, inputs=[(None, None)], timeout=1.0)
    exc = get_exception_desc(answer[0][3])
    if exc: return exc

    return None