Put the right index in lambda in Tkinter Python with for-loop

Question

This question already has an answer here: question from:https://stackoverflow.com/questions/65919057/put-the-right-index-in-lambda-in-tkinter-python-with-for-loop

Answer 1

This will do the trick:

for i in range(len(COMlist)):
        COMSetDest.append(COMlist[i])
        menuCOM.add_command(label=COMlist[i], command= lambda number = i: COMset(COMlist[number])) # probelm
        print(i)

1. The code in your case always assigned the last value of for loop into the lambda function.
2. You need to use this expression command = lambda number = i: f(number)
3. This way it will assign the correct value in each iteration of your for loop to the lambda function.