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author | Matevž Poberžnik <tevzpoberznik@gmail.com> | 2017-10-23 18:03:59 +0200 |
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committer | Matevž Poberžnik <tevzpoberznik@gmail.com> | 2017-10-23 18:03:59 +0200 |
commit | cde24bbc3aec6ce17b8947fd80042419f2e54e6f (patch) | |
tree | ae5c982de3fe70c1444f733e5f5b2a1c12fba301 /python/problems/lists_and_if-fkkt/square_equation | |
parent | fd218b8d0ec631312b2334a44de3c6fde8266998 (diff) |
Add new exercices for FKKT - lists and if
Diffstat (limited to 'python/problems/lists_and_if-fkkt/square_equation')
-rw-r--r-- | python/problems/lists_and_if-fkkt/square_equation/common.py | 89 | ||||
-rw-r--r-- | python/problems/lists_and_if-fkkt/square_equation/sl.py | 53 |
2 files changed, 142 insertions, 0 deletions
diff --git a/python/problems/lists_and_if-fkkt/square_equation/common.py b/python/problems/lists_and_if-fkkt/square_equation/common.py new file mode 100644 index 0000000..45e0f02 --- /dev/null +++ b/python/problems/lists_and_if-fkkt/square_equation/common.py @@ -0,0 +1,89 @@ +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 diff --git a/python/problems/lists_and_if-fkkt/square_equation/sl.py b/python/problems/lists_and_if-fkkt/square_equation/sl.py new file mode 100644 index 0000000..1ad813d --- /dev/null +++ b/python/problems/lists_and_if-fkkt/square_equation/sl.py @@ -0,0 +1,53 @@ +import server +mod = server.problems.load_language('python', 'sl') + + +name = 'Kvadratna enačba' +slug = 'Kvadratna enačba' + + +description = '''\ +<p>Napišite program <code>kvadratna_enacba.py</code>, ki izračuna vse realne rešitve <a href="https://sl.wikipedia.org/wiki/Kvadratna_ena%C4%8Dba">kvadratne enačbe</a> <code>ax^2 + bx + c = 0</code>, +podane z argumenti a, b in c. Vaš program naj se obnaša kot je prikazano spodaj.</p> + +<pre><code class="brush: python">Vpiši a: <span style="color: rgb(239, 69, 64);">1</span> +Vpiši b: <span style="color: rgb(239, 69, 64);">2</span> +Vpiši c: <span style="color: rgb(239, 69, 64);">1</span> +Enačba ima eno realno rešitev: -1.0 + +Vpiši a: <span style="color: rgb(239, 69, 64);">1</span> +Vpiši b: <span style="color: rgb(239, 69, 64);">2</span> +Vpiši c: <span style="color: rgb(239, 69, 64);">0</span> +Enačba ima dve realni rešitvi: 0.0 in -2.0 + +Vpiši a: <span style="color: rgb(239, 69, 64);">1</span> +Vpiši b: <span style="color: rgb(239, 69, 64);">2</span> +Vpiši c: <span style="color: rgb(239, 69, 64);">2</span> +Enačba nima realnih rešitev. +</code></pre> +''' + +if_clause = ['''\ +<p>Preveri, koliko rešitev ima enačba?</p>''', + '''\ +<p>Uporabi pogojni stavek <code>if</code>!</p>''', + '''\ +<pre> +if d == 0: +</pre>'''] + + +plan = [] + +hint = { + 'no_input_call': '''<p>Za branje uporabimo funkcijo <code>input</code></p>''', + + 'if_clause': if_clause, + + 'printing': ['''\ +<p>Izpiši rezultat.</p>'''], + + 'final_hint': ['''\ +<p>Program deluje pravilno!</p>'''], + +} |