def postinit(self, elt=None, generators=None):
self.elt = elt<EOL>if generators is None:<EOL><INDENT>self.generators = []<EOL><DEDENT>else:<EOL><INDENT>self.generators = generators<EOL><DEDENT>
Do some setup after initialisation.

        :param elt: The element that forms the output of the expression.
        :type elt: NodeNG or None

        :param generators: The generators that are looped through.
        :type generators: list(Comprehension) or None