def verify_is_not_none(self, expr, msg=None):
        """
        Soft assert for whether the expr is not None

        :params want: the object to compare against
        :params second: the object to compare with
        :params msg: (Optional) msg explaining the difference
        """
        try:
            self.assert_is_not_none(expr, msg)
        except AssertionError, e:
            if msg:
                m = "%s:\n%s" % (msg, str(e))
            else:
                m = str(e)
            self.verification_erorrs.append(m)