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I am running a loop which adds Tkinter buttons to a list. I want to make each button have a command that runs based on the particular button that was clicked - for now - toggling the relief between raised and sunken. I can't get the command to run on the specific button, it always runs on the last button in the list of buttons, regardless of which button I actually click on.

I tried manually setting the command for each button without a loop (but still with a list!), which worked, but I need to use a loop.

I also tried creating a second loop after the first one.

def toggle_button(self):
    if self['relief'] == 'raised':
        self['relief'] = 'sunken'
    elif self['relief'] == 'sunken':
        self['relief'] = 'raised'
for event in list_of_data:
    event_buttons.append(Button(popup, text=event['event name'], relief='raised'))
    event_buttons[-1].pack()
# Approach 1
    event_buttons[-1].config(command=lambda: toggle_button(event_buttons[-1]))

Approach 2:

for button in event_buttons:
    button.config(command=lambda: toggle_button(button))

I expect event_buttons[0]['command'] to be 

lambda: toggle_button(event_buttons[0])
event_buttons[1]['command'] = lambda: toggle_button(event_buttons[1])
event_buttons[2]['command'] = lambda: toggle_button(event_buttons[2])

And so on.

Hasitha Jayawardana
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Liran
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1 Answers1

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You would need to pass the actual button as an argument for lambda:

event_buttons[-1].config(command=lambda button = event_buttons[-1] : toggle_button( button ))
Stevo Mitric
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