dataset.py 文件源码

def from_json(cls, session, json):
        id = json.get('id')
        fields = json.get('fields')
        unique_fields = frozenset(json.get('unique_by', []))

        def _build_field(name, value):
            unique = name in unique_fields
            return Field.from_schema(value, unique=unique)

        fields = {f[0]: _build_field(f[0], f[1]) for f in viewitems(fields)}
        return cls(session, id, fields)