split string value in a python dict

I have a dict with a key value pair where some have one position ex. ‘A’ and some have multiple positions ex. ‘A,B’ . Is there a way for me to split the ones with multiple positions so I can use both. I’m currently getting a key error because python wants to look up ‘A,B’ when I want it to look up ‘A’,’B’. Please see below.

dict = {1 : 'A' , 2: 'A,B' , 3:'C,D'}

if I wanted to print to values for 2 I would want the out put to be:

A
B

or some form where they are separate so I will stop getting the key error.

Here is the actual bit of code with the KeyError for my project that is causing me trouble.

         for pos in playerPos[player]:
             team_pos[playerPos[player]] += 1
             

KeyError: '1B,OF'

>Solution :

You need to iterate over the split value:

for pos in playerPos[player].split(','):
    team_pos[pos] += 1