_range.py 文件源码

def __init__(self, pgrange, pyrange, oid, subtype_oid, array_oid=None):
        self.subtype_oid = subtype_oid
        self._create_ranges(pgrange, pyrange)

        name = self.adapter.name or self.adapter.__class__.__name__

        self.typecaster = new_type((oid,), name, self.parse)

        if array_oid is not None:
            self.array_typecaster = new_array_type(
                (array_oid,), name + "ARRAY", self.typecaster)
        else:
            self.array_typecaster = None