Dynamically created buttons and on_click event flet

Question

What is the problem with this code? The last button that is created is always the one that is clicked!

import flet as ft

def main(page: ft.Page):

    def click(e, button: ft. Button):
        button.bgcolor = ft.Colors.YELLOW
        button.page.update()

    words = ['ma', 'ti', 'ke', 'to', 'pe', 'la', 'su']
    buttons = []
    
    for word in words:
        button = ft.Button(text=word)
        button.on_click = lambda e: click(e, button)
        buttons.append(button)

    page.add(ft.Row(buttons))

ft.app(main)

Pekka Henttonen · Accepted Answer · 2025-05-24 15:17:28Z

0

I found the answer. It was in the call for lambda function. It should be:

for word in words:
    button = ft.Button(text=word)
    button.on_click = lambda e, btn=button: click(e, btn)
    buttons. Append(button)

answered May 24 at 15:17

Pekka Henttonen

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