#NEWLINE# def mutate_param( self , cfg , param ) : #NEWLINE# #INDENT# '\n    mutate single parameter of cfg in place\n    ' #NEWLINE# if param . is_primitive ( ) : #NEWLINE# #INDENT# param . op1_normal_mutation ( cfg , param . sigma ) #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# random . choice ( param . manipulators ( cfg ) ) ( cfg )