Python: add support for auxiliary code (like for Prolog)

1 files changed, 4 insertions, 4 deletions

diff --git a/python/problems/lists_and_for/prefix/common.py b/python/problems/lists_and_for/prefix/common.py
index 3cc57fb..9725350 100644
--- a/python/problems/lists_and_for/prefix/common.py
+++ b/python/problems/lists_and_for/prefix/common.py
@@ -20,7 +20,7 @@ hint_type = {
     'final_hint': Hint('final_hint')
 }
 
-def test(python, code):
+def test(python, code, aux_code=''):
     in_out = [
         ('a', ['', 'a']),
         ('ab', ['', 'a', 'ab']),
@@ -31,7 +31,7 @@ def test(python, code):
     test_in = [(None, s[0]+'\n') for s in in_out]
     test_out = [str(s[1]) for s in in_out]
     # List of outputs: (expression result, stdout, stderr, exception).
-    answers = python(code=code, inputs=test_in, timeout=1.0)
+    answers = python(code=aux_code+code, inputs=test_in, timeout=1.0)
     outputs = [ans[1] for ans in answers]
 
     n_correct = 0
@@ -51,11 +51,11 @@ def test(python, code):
         hints.append({'id': 'final_hint'})
     return passed, hints
 
-def hint(python, code):
+def hint(python, code, aux_code=''):
     tokens = get_tokens(code)
 
     # run one test first to see if there are any exceptions
-    answer = python(code=code, inputs=[(None, None)], timeout=1.0)
+    answer = python(code=aux_code+code, inputs=[(None, None)], timeout=1.0)
     exc = get_exception_desc(answer[0][3])
     if exc: return exc