如何将字典值从字符串转换为列表？

Question

I have a dictionary in which the values are strings and I need them to be lists. So I tried to do:

for v in dic:
    v[1] = list(v[1])

However, it return an error that is, string index out of range

My whole code is:

def agrupa_por_chave(lista):
    dic = {
        }
    for t in lista:
        if t[0] not in dic:
            dic[t[0]] = t[1]
        else:
            dic[t[0]] += t[1]
    for v in dic:
        v[1] = list(v[1])
    return dic

Answer 1

If you wish to get dict with string values replaced with lists:

>>> l = {1: 'abc', 2: 'def'}

>>> l
{1: 'abc', 
 2: 'def'}

>>> {k:list(v) for k,v in l.items()}
{1: ['a', 'b', 'c'], 
 2: ['d', 'e', 'f']}

Answer 2

How about:

dic = {k: [v] for k, v in dic.items()}

or based on the clarification in the comment:

dic = {k: list(v) for k, v in dic.items()}