Added a new set of exercises (regular expressions).

3 files changed, 117 insertions, 0 deletions

diff --git a/python/problems/re/num/common.py b/python/problems/re/num/common.py
new file mode 100644
index 0000000..4c2f0bf
--- /dev/null
+++ b/python/problems/re/num/common.py
@@ -0,0 +1,75 @@
+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 = 20904
+number = 4
+visible = True
+
+solution = '''\
+def num(s):
+    res = re.search(r'-?((\d*\.\d+)|(\d+\.?))([Ee][+-]\d*)?', s)
+    if not res:
+        return None
+    return int(res.group(0))
+'''
+
+hint_type = {
+    'final_hint': Hint('final_hint')
+}
+
+def test(python, code, aux_code=''):
+    func_name = 'num'
+    tokens = get_tokens(code)
+    if not has_token_sequence(tokens, ['def', func_name]):
+        return False, [{'id' : 'no_func_name', 'args' : {'func_name' : func_name}}]
+
+    in_out = [
+        ('abc', None),
+        ('1', 1.0),
+        ('1.1', 1.1),
+        ('111e+2', 111e+2),
+        ('12-1', 12.0),
+        ('5.123-112', 5.123),
+        ('m-221.0', -221.0),
+        ('Rač. +356', 356.0),
+        ('Ulica št. 15a', 15),
+        ('Višina 180.42, teža 76.5', 180.42),
+    ]
+
+    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=aux_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)):
+        res = ans[0]
+        corr = res == 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:
+        hints.append({'id': 'final_hint'})
+
+    return passed, hints
+
+
+def hint(python, code, aux_code=''):
+    tokens = get_tokens(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
+
+    return None
diff --git a/python/problems/re/num/en.py b/python/problems/re/num/en.py
new file mode 100644
index 0000000..0feb5ff
--- /dev/null
+++ b/python/problems/re/num/en.py
@@ -0,0 +1,13 @@
+id = 20904
+name = 'Signed any number (integer, float)'
+
+description = '''\
+<p>(translation missing)</p>'''
+
+hint = {
+    'plan': '''\
+<p>(translation missing)</p>''',
+
+    'no_input_call': '''\
+<p>(translation missing)</p>''',
+}
diff --git a/python/problems/re/num/sl.py b/python/problems/re/num/sl.py
new file mode 100644
index 0000000..cf96b5a
--- /dev/null
+++ b/python/problems/re/num/sl.py
@@ -0,0 +1,29 @@
+import server
+mod = server.problems.load_language('python', 'sl')
+
+id = 20904
+name = 'Predznačeno poljubno število'
+
+description = '''\
+<p>
+Napišite funkcijo <code>num(s)</code>, ki vrne prvo poljubno predznačeno število
+(lahko ima tudi decimalko). Število naj bo tipa <code>float</code>. Če števila v nizu ni, 
+naj funkcija vrne <code>None</code>.</p>
+<pre>
+>>> num('Večna pot 113')
+113
+>>> num('a-20.5=21.5')
+-20.5
+>>> num('Pregledali smo 10e+5 elementov.')
+10e+5
+</pre>
+'''
+
+plan = []
+
+hint = {
+    'final_hint': ['''\
+<p>Program je pravilen! <br>
+</p>
+'''],
+}