docstr: Sets the length of the slider This measure excludes the padding
  of both ends. That is, the slider's length is this length minus
  the padding on both ends.
  
  The 'len' property is a number and may be specified as:
    - An int or float in the interval [0, inf]
  
  Returns
  -------
  int|float
code: def len(self):
      """
      Sets the length of the slider This measure excludes the padding
      of both ends. That is, the slider's length is this length minus
      the padding on both ends.
  
      The 'len' property is a number and may be specified as:
        - An int or float in the interval [0, inf]
  
      Returns
      -------
      int|float
      """
      return self["len"]
  
imports: from plotly.basedatatypes import BaseLayoutHierarchyType
  import copy
label_desc: Use image node_id 15 for calling the Slider obj's underlying member method code with example usage: obj.len() and returns: self