Changing values in list: Python

Question

I\'m making a function to modify the elements in a list, but it doesn\'t change all the way through... My function is:

def modifyValues(l):
    for x in l:
          


        

Answer 1

When you iterate through the loop, you are iterating the loop elements and not the indexes. You need to use enumerate to get the indexes along with the values.

A small demo can be

def modifyValues(l):
    for i,x in enumerate(l):   # Use enumerate here. 
        if x == 1:
            l[i] = 'a'
        elif x == 2:
            l[i] = 'b'
        elif x == 3:
            l[i] = 'c'
    print (l)

Output

['a', 'b', 'c', 'b', 'c', 'a', 'b', 'b']