Bind a tkinter widget to a function containing args - Use of Lambda

Question

There is a list :

liste_physical_activity.insert(1, pa1)
liste_physical_activity.insert(2, pa2)
liste_physical_activity.bind(\'<>\',          


        

Answer 1

energy_requirement is being passed a reference to main_window, so all you need to do is pass that value along in the binding. This should work:

def energy_requirement(window_mother):
    ...
    liste_physical_activity.bind('<<ListboxSelect>>',  
        lambda event, mw=window_mother: CurSelet_physical_activity(event, mw))

You'll then need to modify CurSelet_physical_activity to accept this additional parameter:

def CurSelet_physical_activity(event, main_window):
    ...

    if value==pa1:
       ER=1
       label = Label(main_window, text="Energy Requirement (kcal ME/day)")
       ...

It doesn't look like you use event anywhere in CurSelet_physical_activity, so you can remove that from the binding and from the parameter list of the function if you want.