parameters: (self, name, value)
docstring: If name is known, set its value.
  
          If name is not known, raise KeyError.
docstring_summary: If name is known, set its value.
docstring_tokens: If name is known set its value .
function: def __setitem__(self, name, value):
          """If name is known, set its value.
  
          If name is not known, raise KeyError.
          """
          self.settings[name].value = value
function_tokens: def __setitem__ ( self , name , value ) : self . settings [ name ] . value = value