summaryrefslogtreecommitdiff
path: root/python/problems/lists_and_if-fkkt/square_equation
diff options
context:
space:
mode:
authorMatevž Poberžnik <tevzpoberznik@gmail.com>2017-10-23 18:03:59 +0200
committerMatevž Poberžnik <tevzpoberznik@gmail.com>2017-10-23 18:03:59 +0200
commitcde24bbc3aec6ce17b8947fd80042419f2e54e6f (patch)
treeae5c982de3fe70c1444f733e5f5b2a1c12fba301 /python/problems/lists_and_if-fkkt/square_equation
parentfd218b8d0ec631312b2334a44de3c6fde8266998 (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.py89
-rw-r--r--python/problems/lists_and_if-fkkt/square_equation/sl.py53
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>'''],
+
+}