[Evals] If ideal is not list, cast as list (openai#800)

Resolves openai#791

evals/elsuite/basic/fuzzy_match.py

@@ -23,6 +23,9 @@ def __init__(
  def eval_sample(self, test_sample, rng):
  del rng
  prompt, correct_answers = test_sample["input"], test_sample["ideal"]
+ if not isinstance(correct_answers, list):
+ correct_answers = [correct_answers]
+
  result = self.completion_fn(
  prompt=prompt,
  temperature=0.0, # Q: why are these hardcoded?
@@ -31,6 +34,7 @@ def eval_sample(self, test_sample, rng):
  sampled = result.get_completions()[0]
 
  matches = [utils.fuzzy_match(sampled, correct_answer) for correct_answer in correct_answers]
+
  evals.record.record_match(
  True in matches,
  expected=correct_answers,