test

class _caller:
    def __init__(self, sql, name):
        self.sql = sql
        self.name = name

    def __call__(self, **kwargs):
        if self.name in self.sql:
            try:
                print self.sql[self.name] % kwargs
            except KeyError, e:
                raise Exception("Missing argument %s" % e)
        else:
            raise Exception("Invalid method '%s'" % self.name)






class test:
    def __init__(self, sql, **kwargs):
        self.sql = sql
        self.kwargs = kwargs

    def __getattr__(self, name):
        return _caller(self.sql, name, **self.kwargs)






if __name__ == "__main__":
    _SQLS = {
        "add": "INSERT INTO `tabulka` (name, age, email) VALUES ('%(name)s', '%(age)s', '%(email)s');",
        "edit": "UPDATE `tabulka` SET age = '%(age)s', email = '%(email)s' WHERE name = '%(name)s';",
        "del": "REMOVE FROM `tabulka` WHERE name = '%(name)s';",
    }

    t = test(_SQLS)
    t.add(name="John", age="30", email="john@example.com")