docstr: Sets the constraint operation. "=" keeps regions equal to
  `value` "<" and "<=" keep regions less than `value` ">" and
  ">=" keep regions greater than `value` "[]", "()", "[)", and
  "(]" keep regions inside `value[0]` to `value[1]` "][", ")(",
  "](", ")[" keep regions outside `value[0]` to value[1]` Open
  vs. closed intervals make no difference to constraint display,
  but all versions are allowed for consistency with filter
  transforms.
  
  The 'operation' property is an enumeration that may be specified as:
    - One of the following enumeration values:
          ['=', '<', '>=', '>', '<=', '[]', '()', '[)', '(]', '][',
          ')(', '](', ')[']
  
  Returns
  -------
  Any
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code: def operation(self):
      """
      Sets the constraint operation. "=" keeps regions equal to
      `value` "<" and "<=" keep regions less than `value` ">" and
      ">=" keep regions greater than `value` "[]", "()", "[)", and
      "(]" keep regions inside `value[0]` to `value[1]` "][", ")(",
      "](", ")[" keep regions outside `value[0]` to value[1]` Open
      vs. closed intervals make no difference to constraint display,
      but all versions are allowed for consistency with filter
      transforms.
  
      The 'operation' property is an enumeration that may be specified as:
        - One of the following enumeration values:
              ['=', '<', '>=', '>', '<=', '[]', '()', '[)', '(]', '][',
              ')(', '](', ')[']
  
      Returns
      -------
      Any
      """
      return self["operation"]
  
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 9 for calling the Contours obj's underlying member method code with example usage: obj.operation() and returns: self