def pkg_blacklist(self):
        """Manage blacklist packages
        """
        blacklist = BlackList()
        options = [
            "-b",
            "--blacklist"
        ]
        flag = [
            "--add",
            "--remove"
        ]
        command = ["list"]
        if (len(self.args) == 2 and self.args[0] in options and
                self.args[1] == command[0]):
            blacklist.listed()
        elif (len(self.args) > 2 and self.args[0] in options and
                flag[0] in self.args):
            self.args.remove(flag[0])
            blacklist.add(self.args[1:])
        elif (len(self.args) == 3 and self.args[0] in options and
                "ALL" in self.args and flag[1] in self.args):
            self.args.remove(flag[1])
            blacklist.remove(blacklist.get_black())
        elif (len(self.args) > 2 and self.args[0] in options and
                flag[1] in self.args):
            self.args.remove(flag[1])
            blacklist.remove(self.args[1:])
        else:
            usage("")
Manage blacklist packages