Python - using a function in another to change a str in a list of list

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Python

functional

Here's the return of my function:

[['Musique', 'Shawn Phillips', '2018-08-24', '2018-08-24'], ['Musique', "L'avenue Royale fête l'été!", '2018-08-25', '2018-08-25'], ['Musique', 'Perséides musicales', '2018-08-03', '2018-08-03']

I have to use a loop to i can search all those index and replace all date like <pre> '2018-08-24'</pre> to an int and then replace all of those date with the int.

Now, the other function that i need to put in this one is actually the function thats returns the int(obtain_date(date)), this one actually works. So now im having a hard time using this function in the initial one so i can use a loop with it (im assuming) to replace all str of my date into int.


So the function that works is called obtain_date(date)

I have to put it in obtain_events Keep in my mind that this is a list of lists.

So my 2 functions involved are:

obtain_events()
obtain_date(date)

- obtain_date(date) goes in obtain_events()

Thanks!

What I have tried:

I've tried to use my obtain_date(date) in a loop like this:

year = '2018'
for liste in my_liste:                     #to reach my global list
          for element in liste:            # to reach every lists in my list
             if year in element:      #using '2018' as its in every str i modify
              element[5:] = obtain_date(date)          #[5:] = str after '2018