engine.py 文件源码

def __init__(self, cursor, engine, typemap = None):
        """ResultProxy objects are constructed via the execute() method on SQLEngine."""
        self.cursor = cursor
        self.engine = engine
        self.echo = engine.echo=="debug"
        self.rowcount = engine.context.rowcount
        metadata = cursor.description
        self.props = {}
        self.keys = []
        i = 0
        if metadata is not None:
            for item in metadata:
                # sqlite possibly prepending table name to colnames so strip
                colname = item[0].split('.')[-1].lower()
                if typemap is not None:
                    rec = (typemap.get(colname, types.NULLTYPE), i)
                else:
                    rec = (types.NULLTYPE, i)
                if rec[0] is None:
                    raise "None for metadata " + colname
                if self.props.setdefault(colname, rec) is not rec:
                    self.props[colname] = (ResultProxy.AmbiguousColumn(colname), 0)
                self.keys.append(colname)
                self.props[i] = rec
                i+=1