code: def extend_name(suffix):
      
  
      def dec(cls):
          name = '{}{}'.format(cls.__name__, suffix)
          setattr(cls, '__name__', name)
          return cls
  
      return dec
docs: A factory for class decorators that modify the class name by appending some text to it.
  
      Example:
  
          @extend_name('_Foo')
          class Class:
              pass
  
          assert Class.__name__ == 'Class_Foo'