Hello, I recently tried using the set function in Python and was surprised to find that
a=[ 1, 2,3, [1,2] ] doesn't work with 'set', throwing TyperError (unhashable exception). I found out that this is because lists can't be hashed. So,this implies 'a' cannot be a set in python which i think is quite unfortunate, after all 'a' does look like a mathematical set. My question is, 1) Why can't lists be hashed? and 2) This is not related, but is there i neat way (without pop and list comprehension) to convert a set into a list? I say neat because i'm guessing using list comprehension might turn out be slow and there might be other methods which are faster. Thank you for your time SM -- http://mail.python.org/mailman/listinfo/python-list
