Function set_value

src/marshmallow/utils.py:131–151

Set a value in a dict. If `key` contains a '.', it is assumed be a path (i.e. dot-delimited string) to the value's location. :: >>> d = {} >>> set_value(d, 'foo.bar', 42) >>> d {'foo': {'bar': 42}}

(dct: dict[str, typing.Any], key: str, value: typing.Any)

def set_value(dct: dict[str, typing.Any], key: str, value: typing.Any):
    """Set a value in a dict. If `key` contains a '.', it is assumed
    be a path (i.e. dot-delimited string) to the value's location.

    ::

        >>> d = {}
        >>> set_value(d, 'foo.bar', 42)
        >>> d
        {'foo': {'bar': 42}}
    """
    if "." in key:
        head, rest = key.split(".", 1)
        target = dct.setdefault(head, {})
        if not isinstance(target, dict):
            raise ValueError(
                f"Cannot set {key} in {head} due to existing value: {target}"
            )
        set_value(target, rest, value)
    else:
        dct[key] = value


def callable_or_raise(obj):