1 files changed, 75 insertions, 0 deletions
diff --git a/python/problems/while_and_if/buy_five/common.py b/python/problems/while_and_if/buy_five/common.py
new file mode 100644
index 0000000..586e50a
--- /dev/null
+++ b/python/problems/while_and_if/buy_five/common.py
@@ -0,0 +1,75 @@
+# coding=utf-8
+
+from python.util import has_token_sequence, string_almost_equal, \
+    string_contains_number, get_tokens
+from server.hints import Hint, HintSequence
+
+id = 185
+group = 'while_and_if'
+number = 1
+visible = True
+
+solution = '''\
+vsota = 0
+i = 0
+while i < 5:
+    vsota += int(input('Cena artikla: '))
+    i += 1
+print('Vsota:', vsota)
+'''
+
+hint_type = {
+    'plan': HintSequence('plan', 5),
+    'name_error': Hint('name_error'),
+    'type_error': Hint('name'),
+    'error': Hint('error'),
+    'printing': Hint('printing'),
+}
+
+def test(python, code):
+    # List of inputs: (expression to eval, stdin).
+    test_in = [
+        (None, '1\n1\n1\n1\n1\n'),
+        (None, '1\n2\n3\n4\n5\n'),
+        (None, '1\n2\n0\n3\n-1\n'),
+        (None, '5\n4\n3\n11\n7\n'),
+        (None, '0\n0\n0\n0\n0\n'),
+    ]
+
+    test_out = [
+        5,
+        15,
+        5,
+        29,
+        0,
+    ]
+
+    # List of outputs: (expression result, stdout, stderr, exception).
+    answers = python(code=code, inputs=test_in, timeout=1.0)
+    outputs = [ans[1] for ans in answers]
+
+    n_correct = 0
+    for output, correct in zip(outputs, test_out):
+        if string_contains_number(output, correct):
+            n_correct += 1
+    return n_correct, len(test_in)
+
+def hint(python, code):
+    # run one test first to see if there are any exceptions
+    test_in = [(None, '1\n1\n1\n1\n1\n')]
+    answer = python(code=code, inputs=test_in, timeout=1.0)
+    exc = answer[0][3]
+    # if have an exception!
+    if exc:
+        if 'NameError' in exc:
+            return [{'id':'name_error', 'args': {'message': exc}}]
+        elif 'TypeError' in exc:
+            return [{'id':'type_error', 'args': {'message': exc}}]
+        else:
+            return [{'id':'error', 'args': {'message': exc}}]
+
+    # student is not using print function
+    if not has_token_sequence(code, ['print']):
+        return [{'id' : 'printing'}]
+
+    return None