How to call a function with parameter by multiple buttons

Question

I create many buttons in my script. I need to call a function by these buttons. But the function is working only in the very last button. What is wrong?

import ipywidgets as widgets
from IPython.core.display import display, HTML

def fn(b):
    print(b.description+" clicked.")

for i in range(10):
    btn= widgets.Button(
    description='Button '+str(i),
    disabled=False,
    button_style='info', # 'success', 'info', 'warning', 'danger' or ''
    tooltip='Delete')
    display(btn)

btn.on_click(fn)

put the btn.on_click(fn) inside the for loop – yoav_aaa Jul 30 '19 at 14:59 — yoav_aaa, Jul 30 '19 at 14:59

score 0 · Accepted Answer · answered Jul 30 '19 at 15:09

0

btn.on_click(fn) is outside your loop so btn referes to the last button instance in your loop

Coding this way will fix the problem

for i in range(10):
  #loop previous body
  btn.on_click(fn)

answered Jul 30 '19 at 15:09

IQbrod

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How to call a function with parameter by multiple buttons

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