pg.py 文件源码

def __init__(self, db):
        """Initialize type cache for connection."""
        super(DbTypes, self).__init__()
        self._regtypes = False
        self._get_attnames = db.get_attnames
        self._typecasts = Typecasts()
        self._typecasts.get_attnames = self.get_attnames
        self._typecasts.connection = db
        db = db.db
        self.query = db.query
        self.escape_string = db.escape_string