docstr: Sets a prefix appearing before the number.
  
  The 'prefix' property is a string and must be specified as:
    - A string
    - A number that will be converted to a string
  
  Returns
  -------
  str
docstr_tok: ["Sets","a","prefix","appearing","before","the","number",".","The","'prefix","'","property","is","a","string","and","must","be","specified","as",":","-","A","string","-","A","number","that","will","be","converted","to","a","string","Returns","--","--","--","-","str"]
code: def prefix(self):
      """
      Sets a prefix appearing before the number.
  
      The 'prefix' property is a string and must be specified as:
        - A string
        - A number that will be converted to a string
  
      Returns
      -------
      str
      """
      return self["prefix"]
  
file_path: catboost/contrib/python/plotly/py3/plotly/graph_objs/indicator/_number.py
imports: from plotly.basedatatypes import BaseTraceHierarchyType
  import copy
label_desc: Use image node_id 3 for calling the Number obj's underlying member method code with example usage: obj.prefix() and returns: self