def do_set_breakpoint(self, arg):
        "Set a breakpoint at filename:breakpoint"
        if arg:
            if ':' is not arg:
                args = arg.split(":")
            else:
                args = (self.filename, arg)
            Frontend.do_set_breakpoint(self, *args)
        else:
            self.do_list_breakpoint()
dataset/ETHPy150Open uwdata/termite-data-server/web2py/gluon/contrib/qdb.py/Cli.do_set_breakpoint/operator `in` -> `is not`