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author | Matevž Poberžnik <tevzpoberznik@gmail.com> | 2017-11-06 17:15:27 +0100 |
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committer | Matevž Poberžnik <tevzpoberznik@gmail.com> | 2017-11-06 17:15:27 +0100 |
commit | 73c22b77730970bcfa13eedec409c2477453dc5f (patch) | |
tree | c09c3e52fcff770916482df45ba41b88af820e37 /python/problems/for-fkkt/min | |
parent | d224a2d6a215264e6ca5854d07461311bda773c1 (diff) |
FKKT: for loop group
Diffstat (limited to 'python/problems/for-fkkt/min')
-rw-r--r-- | python/problems/for-fkkt/min/common.py | 101 | ||||
-rw-r--r-- | python/problems/for-fkkt/min/sl.py | 62 |
2 files changed, 163 insertions, 0 deletions
diff --git a/python/problems/for-fkkt/min/common.py b/python/problems/for-fkkt/min/common.py new file mode 100644 index 0000000..ede7619 --- /dev/null +++ b/python/problems/for-fkkt/min/common.py @@ -0,0 +1,101 @@ +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 = 25013 +number = 1 +visible = True + +solution = '''\ +seznam = [23, 42, 87, 34, 1, -3, 2] +minimum = seznam[0] +for elt in seznam: + if elt < minimum: + minimum = elt +print(minimum) +''' + +hint_type = { + 'no_xs': Hint('no_xs'), + 'for_loop': Hint('for_loop'), + 'if_clause': Hint('if_clause'), + 'printing': Hint('printing'), + 'no_min': Hint('no_min'), + 'final_hint': Hint('final_hint') +} + +def test(python, code, aux_code=''): + tokens = get_tokens(code) + + if has_token_sequence(tokens, ['min', '(']): + return False, [{'id': 'no_min'}] + + test_xs = [[5, 4, -7, 2, 12, -3, -4, 11, 2], + [0], + [3, 1, 2, 8], + [1, 2, 3, 42], + [23, 42, 87, 34, 1, -3, 2]] + test_out = [ + '-7', + '0', + '1', + '1', + '-3' + ] + + n_correct = 0 + tin = None + for xs_i, xs in enumerate(test_xs): + # change code to contain new xs instead of the one + # given by user + tcode = re.sub(r'^seznam\s*=\s*\[.*?\]', + 'seznam = ' + str(xs), + code, + flags = re.DOTALL | re.MULTILINE) + + # use python session to call tcode + answers = python(code=aux_code+tcode, inputs=[(None, None)], timeout=1.0) + output = answers[0][1] + + if output.rstrip().endswith(test_out[xs_i]): + n_correct += 1 + else: + tin = test_xs[xs_i] + tout = test_out[xs_i] + + passed = n_correct == len(test_xs) + hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_xs)}}] + 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 + answer = python(code=aux_code+code, inputs=[(None, None)], timeout=1.0) + exc = get_exception_desc(answer[0][3]) + if exc: return exc + + tokens = get_tokens(code) + + # if has no xs, tell him to ask for values + if not has_token_sequence(tokens, ['seznam', '=', '[']): + return [{'id' : 'no_xs'}] + + # student does not have for: instruct him on loops + if not has_token_sequence(tokens, ['for']): + return [{'id' : 'for_loop'}] + + if has_token_sequence(tokens, ['min', '(']): + return [{'id': 'no_min'}] + + 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 diff --git a/python/problems/for-fkkt/min/sl.py b/python/problems/for-fkkt/min/sl.py new file mode 100644 index 0000000..58b5e11 --- /dev/null +++ b/python/problems/for-fkkt/min/sl.py @@ -0,0 +1,62 @@ +import server +mod = server.problems.load_language('python', 'sl') + + +name = 'Najmanjše število v seznamu' +slug = 'Najmanjše število v seznamu' + + +description = '''\ +<p>Napišite program, ki poišče in izpiše najmanjši element v seznamu brez uporabe funkcije <code>min()</code>!<br> +Seznam definirajte na vrhu programa <code>seznam = [23, 42, 87, 34, 1, -3, 2]</code><br> +Izpis:</p> + +<pre><code>-3</code></pre> + +<p>Seveda mora program delovati tudi za vse druge sezname!</p> +''' + +if_clause = ['''\ +<p>Uporabi pogojni stavek <code>if</code>!</p>''', + '''\ +<pre> +if elt < minimum: +</pre>'''] + +for_loop = ['''\ +<p>Pregledati bo treba vse elemente v seznamu <code>seznam</code>''', + '''\ +<p>Najlažje bo s <code>for</code> zanko. +''', + '''\ +<p>Poskusi naslednji dve vrstici:</p> +<pre> +for elt in seznam: + print (elt) +</pre>''', + '''\ +<p>V zgornjem primeru z zanko <code>for</code> Pythonu naročimo naj se sprehodi čez seznam <code>seznam</code> +in na vsakem koraku trenutni element seznama shrani v spremenljivko <code>elt</code>. +Kaj naj Python naredi s to spremenljivko, je zapisano v zamaknjenih vrsticah. +Tokrat vrednost le izpišemo.</p>'''] + + +plan = [] + +hint = { + 'no_xs': ['''\ +<p>Program mora imeti na začetku definiran seznam <code>seznam</code>.</p>'''], + + 'no_min': '''Funkcija <code>min()</code> ni dovoljena pri tej nalogi!''', + + 'for_loop': for_loop, + + 'if_clause': if_clause, + + 'printing': ['''\ +<p>Izpiši rezultat.</p>'''], + + 'final_hint': ['''\ +<p>Program deluje pravilno!</p>'''], + +} |