The default, ``None``, means `sys.stdout`.

    *args, **kwargs
        The properties to set.  The following combinations are supported:

        - Set the linestyle of a line to be dashed:

          >>> line, = plot([1, 2, 3])
          >>> setp(line, linestyle='--')

        - Set multiple properties at once:

          >>> setp(line, linewidth=2, color='r')

        - List allowed values for a line's linestyle:

          >>> setp(line, 'linestyle')
          linestyle: {'-', '--', '-.', ':', '', (offset, on-off-seq), ...}

        - List all properties that can be set, and their allowed values:

          >>> setp(line)
          agg_filter: a filter function, ...
          [long output listing omitted]

        `setp` also supports MATLAB style string/value pairs.  For example, the
        following are equivalent:

        >>> setp(lines, 'linewidth', 2, 'color', 'r')  # MATLAB style
        >>> setp(lines, linewidth=2, color='r')        # Python style

    See Also
    --------
    getp
    Nr