db.py 文件源码

def _where_dict(self, where):
        where_clauses = []

        for k, v in sorted(iteritems(where), key= lambda t:t[0]):
            where_clauses.append(k + ' = ' + sqlquote(v))
        if where_clauses:
            return SQLQuery.join(where_clauses, " AND ")
        else:
            return None