human
Solve the following python programming problem given the following code:
@ presentation.render_for (WeightsSequenceEditor, 'edit') 
def render_weightssequenceeditor_edit(self, h, comp, model) : 
    def answer() : 
        if self.commit () : 
            comp.call (self, None) 
with h.form (class_ = 'weights-form') : 
        kw = { 
            
} 
        if (not self.weights ()) : 
            kw ['placeholder'] = '10,20,30' 
(h << h.input (value = self.weights (), type = 'text', ** kw).action (self.weights).error (self.weights.error)) 
        (comp << h.button (_ ('Save'), class_ = 'btn btn-primary').action (answer)) 
return h.root 

    
    

    Fix the buggy line: (comp << h.button (_ ('Save'), class_ = 'btn btn-primary').action (answer))
assistant
#Here is Python code to fix the buggy line: (comp << h.

(h << h.button (_ ('Save'), class_ = 'btn btn-primary').action (answer))