argschema_parser.py 文件源码

def fill_defaults(schema, args):
    """DEPRECATED, function to fill in default values from schema into args
    bug: goes into an infinite loop when there is a recursively defined schema

    Parameters
    ----------
    schema : marshmallow.Schema
        schema to get defaults from
    args :


    Returns
    -------
    dict
        dictionary with missing default values filled in

    """

    defaults = []

    # find all of the schema entries with default values
    schemata = [(schema, [])]
    while schemata:
        subschema, path = schemata.pop()
        for k, v in subschema.declared_fields.items():
            if isinstance(v, mm.fields.Nested):
                schemata.append((v.schema, path + [k]))
            elif v.default != mm.missing:
                defaults.append((path + [k], v.default))

    # put the default entries into the args dictionary
    args = copy.deepcopy(args)
    for path, val in defaults:
        d = args
        for path_item in path[:-1]:
            d = d.setdefault(path_item, {})
        if path[-1] not in d:
            d[path[-1]] = val
    return args