Why does it give an error?

[burhansvural]

Question

I created a clip. When the value of the favorite variable is True, I want the leading icon to be icons.FAVORITE, and when the value is False, I want the leading icon to be icons.FAVORITE_BORDER. I'm very sleep deprived so I may not be able to see even a very simple thing. Can you help me?

Code sample

import flet as ft
def main(page: ft.Page):
    favorite=False

    def deneme_chip_click(e):
        favorite= not favorite
    
    deneme_chip=ft.Chip(
        label="Deneme",
        leading=ft.Icon(favorite ? ft.icons.FAVORITE: ft.icons.FAVORITE_BORDER),
        autofocus=True,
        on_click=deneme_chip_click,
    )

    page.add(ft.Row(controls=[deneme_chip]))

ft.app(target=main)

I'm getting an error like this too;

import flet as ft

def main(page: ft.Page):  
    favorite:bool=False  

    def deneme_chip_click(e):
        favorite =not favorite
        
    deneme_chip=ft.Chip(
        label="Deneme",
        leading= ft.Icon(name=ft.icons.FAVORITE if favorite else ft.icons.FAVORITE_BORDER),
        autofocus=True,
        on_click=deneme_chip_click,
    )

    page.add(ft.Row(controls=[deneme_chip]))

ft.app(target=main)

Error message

invalid syntax

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• I have searched for answers to my question both in the issues and in previous discussions.

[burhansvural]

problem solved

import flet as ft

def main(page: ft.Page):  

    favorite:bool=False

    def deneme_chip_click(e):        
        nonlocal favorite
        favorite = not favorite
        if favorite:
            e.control.leading=ft.Icon(ft.icons.FAVORITE_OUTLINE_SHARP)
        else:
            e.control.leading=ft.Icon(ft.icons.FAVORITE)
        page.update()
        
    deneme_chip=ft.Chip(
        label=ft.Text("Deneme"),
        leading= ft.Icon(name=ft.icons.FAVORITE),
        autofocus=True,
        on_click=deneme_chip_click,
    )

    page.add(ft.Row(controls=[deneme_chip]))    

ft.app(target=main)