In Python 2.6.5, given this list mylist = [20, 30, 25, 20]
Why does this set comprehension not work?
>>> {x for x in mylist if mylist.count(x) >= 2}
File "<stdin>", line 1
{x for x in mylist if mylist.count(x) >= 2}
^
SyntaxError: invalid syntax
Thank you.