Update.

diff --git a/problem.py b/problem.py
index 25ffc49..354235e 100755 (executable)
--- a/problem.py
+++ b/problem.py
@@ -7,11 +7,14 @@
 
 
 class Problem:
+    # returns a nb x (L+1+L) long tensor
     def generate_seq(self, nb):
         pass
 
+    # save a file to vizualize quizzes, you can save a txt or png file
     def save_quizzes(self, input, result_dir, filename_prefix, logger):
         pass
 
+    # returns a pair (forward_tokens, backward_token)
     def direction_tokens(self):
         pass