def _construct_from_json()

in summarize_from_feedback/utils/hyperparams.py [0:0]

• 27 lines of code
• 9 McCabe index (conditional complexity)

def _construct_from_json(ty, json_val, key=""):
    """
    Construct a value of type `ty` based on the json value `json_val`.
    """
    if json_val is None:
        return json_val
    if is_hparam_type(ty):
        if isinstance(json_val, ty):
            return json_val
        if not isinstance(json_val, dict):
            raise TypeError(
                f"Tried to construct attribute {key} of type {ty} with value {json_val}"
            )
        x = ty()
        x.override_from_json(json_val, key=key)
        return x
    if _is_list_type(ty):
        subtype = ty.__args__[0]
        return [_construct_from_json(subtype, y, key + ".listitem") for y in json_val]
    if _is_dict_type(ty):
        ktype = ty.__args__[0]
        vtype = ty.__args__[1]
        return {
            _construct_from_json(ktype, k, key + ".dictkey"): _construct_from_json(
                vtype, v, key + ".dictitem"
            )
            for k, v in json_val.items()
        }
    check_type(key, json_val, ty)
    return json_val