code: def convert_field(self, value, conversion):
      # do any conversion on the resulting object
      if conversion is None:
          return value
      elif conversion == "s":
          return str(value)
      elif conversion == "r":
          return repr(value)
      elif conversion == "a":
          return ascii(value)
      raise ValueError(
          "Unknown conversion specifier {0!s}".format(conversion)
      )
  
imports: import _string
  import re
  from collections import ChainMap
label_desc: Use image node_id 7 for calling the Formatter obj's underlying member method code with example usage: obj.convert_field(value, conversion) and returns: value, str, repr, ascii