Hi! In [69]: a = 'a b c' In [70]: b = 'a b, c d'
In [74]: [i for i in a.split() if i not in b.split()] Out[74]: ['b'] Everything ok. In [77]: b.split() == [i for i in b.split()] Out[77]: True As expected. Now, put this in the first list comprehension: In [80]: [i for i in a.split() if i not in [i for i in b.split()] ] Out[80]: ['d'] Hmmmm... why is that? Regards! -- http://mail.python.org/mailman/listinfo/python-list
