``cycler(label=values)``.

    Parameters
    ----------
    cycler : Cycler
        Copy constructor for Cycler.

    label : str
        The property key. Must be a valid `.Artist` property.
        For example, 'color' or 'linestyle'. Aliases are allowed,
        such as 'c' for 'color' and 'lw' for 'linewidth'.

    values : iterable
        Finite-length iterable of the property values. These values
        are validated and will raise a ValueError if invalid.

    Returns
    -------
    Cycler
        A new :class:`~cycler.Cycler` for the given properties.

    Examples
    --------
    Creating a cycler for a single property:

    >>> c = cycler(color=['red', 'green', 'blue'])

    Creating a cycler for simultaneously cycling over multiple properties
    (e.g. red circle, green plus, blue cross):

    >>> c = cycler(color=['red', 'green', 'blue'],
    ...            marker=['o', '+', 'x'])

    zEcycler() can only accept positional OR keyword arguments -- not both.z2cycler() must have positional OR keyword argumentsr,