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author | Martin <martin@leo.fri1.uni-lj.si> | 2015-10-05 11:57:31 +0200 |
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committer | Martin <martin@leo.fri1.uni-lj.si> | 2015-10-05 11:57:31 +0200 |
commit | e63627ad942a7d2c9eebb86f15c96191e7408eb8 (patch) | |
tree | 84e7bc342d8a534ed23e81e1bc5699184be18013 /python/problems/lists_and_for/counting | |
parent | 6bda47fb45788f7464b7846bc58d7b90cc65240f (diff) |
Added problem "counting".
Some other small text corrections.
Diffstat (limited to 'python/problems/lists_and_for/counting')
-rw-r--r-- | python/problems/lists_and_for/counting/common.py | 109 | ||||
-rw-r--r-- | python/problems/lists_and_for/counting/en.py | 16 | ||||
-rw-r--r-- | python/problems/lists_and_for/counting/sl.py | 90 |
3 files changed, 215 insertions, 0 deletions
diff --git a/python/problems/lists_and_for/counting/common.py b/python/problems/lists_and_for/counting/common.py new file mode 100644 index 0000000..2d59182 --- /dev/null +++ b/python/problems/lists_and_for/counting/common.py @@ -0,0 +1,109 @@ +# coding=utf-8 + +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 = 203 +group = 'lists_and_for' +number = 3 +visible = True + +solution = '''\ +xs = [42, 5, 4, -7, 2, 12, -3, -4, 11, 42, 2] + +stevec = 0 +for x in xs: + if x == 42: + stevec += 1 +print("Število 42 se v seznamu pojavi", stevec, "krat.") +''' + +hint_type = { + 'no_xs': Hint('no_xs'), + 'for_loop': Hint('for_loop'), + 'if_clause': Hint('if_clause'), + 'printing': Hint('printing'), + 'print_out_for': Hint('print_out_for'), + 'final_hint': Hint('final_hint') +} + +def test(python, code): + test_xs = [[42, 5, 4, -7, 2, 42, -3, -4, 11, 42, 2], + [42, 5, 4, -7, 2, 12, 42, -4, 11, 2], + [5, 4, -7, 2, 12, -3, -4, 11, 2], + [], + [42], + [42, 42], + [1, 2, 3, -42], + [1, 2, 3, 42, -42]] + test_out = [ + 3, + 2, + 0, + 0, + 1, + 2, + 0, + 1 + ] + + 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'^xs\s*=\s*\[.*?\]', + 'xs = ' + str(xs), + code, + flags = re.DOTALL | re.MULTILINE) + + # use python session to call tcode + answers = python(code=tcode, inputs=[(None, None)], timeout=1.0) + output = answers[0][1] + + if str(test_out[xs_i]) in output: + 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: + hints.append({'id': 'problematic_test_case', 'args': {'testin': str(tin), 'testout': str(tout)}}) + if passed: + hints.append({'id': 'final_hint'}) + return passed, hints + +def hint(python, 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 + + tokens = get_tokens(code) + + # if has no xs, tell him to ask for values + if not has_token_sequence(tokens, ['xs', '=', '[']): + return [{'id' : 'no_xs'}] + + # 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' : 'for_loop'}] + + 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'}] + + # student is not using print at the beginning of line + if not has_token_sequence(tokens, ['\n', 'print']): + return [{'id' : 'print_out_for'}] + + + return None diff --git a/python/problems/lists_and_for/counting/en.py b/python/problems/lists_and_for/counting/en.py new file mode 100644 index 0000000..805b37c --- /dev/null +++ b/python/problems/lists_and_for/counting/en.py @@ -0,0 +1,16 @@ +# coding=utf-8 + +id = 193 +name = 'Contains 42' +slug = 'Contains 42' + +description = '''\ +<p>(translation missing)</p>''' + +hint = { + 'plan': '''\ +<p>(translation missing)</p>''', + + 'no_input_call': '''\ +<p>(translation missing)</p>''', +} diff --git a/python/problems/lists_and_for/counting/sl.py b/python/problems/lists_and_for/counting/sl.py new file mode 100644 index 0000000..67dc323 --- /dev/null +++ b/python/problems/lists_and_for/counting/sl.py @@ -0,0 +1,90 @@ +# coding=utf-8 +import server +mod = server.problems.load_language('python', 'sl') + + +id = 203 +name = 'Štej' +slug = 'Štej' + + +description = '''\ +<p>Napiši program, ki v podanem seznamu prešteje število ponovitev števila 42. +Seznam <code>xs</code> definiraj na vrhu programa, kot v prejšnjih nalogah, +izpis pa naj bo takšen: "Število 42 se v seznamu pojavi 2 krat."''' + +for_loop = ['''\ +<p>Pregledati bo treba vse elemente v seznamu <code>xs</code>''', + '''\ +<p>Najlažje s <code>for</code> zanko. +''', + '''\ +<p>Poskusi naslednji dve vrstici:</p> +<pre> +for x in xs: + print (x) +</pre>''', + '''\ +<p>V zgornjem primeru z zanko <code>for</code> Pythonu naročimo naj se sprehodi čez seznam <code>xs</code> +in na vsakem koraku trenutni element seznama shrani v spremenljivko <code>x</code>. +Kaj naj Python naredi s to spremenljivko, je zapisano v zamaknjenih vrsticah. +V danem primeru vrednost le izpišemo.</p>'''] + +if_clause = ['''\ +<p>Preveri, ali imamo število 42?</p>''', + '''\ +<p>Uporabi pogojni stavek <code>if</code>!</p>''', + '''\ +<pre> +if x == 42: +</pre>'''] + +count_42 = ['''\ +<p>Zapomni si, da si našel 42! Povečaj števec!</p>''', + '''\ +<p>Števec na začetku nastavimo na 0</p> +<pre> +stevec = 0 +</pre> +<p>in ga tekom zanke ustrezno spreminjamo.'''] + +plan = ['''\ +<p><b>Plan</b>: Preglej vse elemente v seznamu in vsakič, ko srečaš 42, povečaj +števec za 1.</p> +''', + '''\ +<p>Bolj podroben plan: </p> +<pre> +Za vsak element v seznamu + Poglej, ali je 42? + Če je, povečaj števec. +Izpiši števec. +</pre> +<p>Zdaj pa je potrebno le še slovenščino prevesti v Python.</p> +''', + for_loop, + if_clause, + count_42] + +hint = { + 'no_xs': ['''\ +<p>Program mora imeti na začetku definiran seznam <code>xs</code>.</p>'''], + + 'for_loop': for_loop, + + 'if_clause': if_clause, + + 'printing': ['''\ +<p>Izpiši rezultat.</p>'''], + + 'print_out_for': ['''\ +<p>Pazi, da izpišeš rezultat izven zanke!</p>'''], + + 'final_hint:': ['''\ + <p>Nalogo lahko rešiš bistveno hitreje, če poznaš metodo <code>count</code></p> + <pre> + xs = [42, 5, 4, -7, 2, 12, -3, -4, 11, 42, 2] + print('Število 42 se v seznamu pojavi', xs.count(42), 'krat.') +</pre>'''] + +} |