Converting dictionary values from list of strings to list of list.

[dovah]

I dispose of a dictionary whose values look like a list of strings (d_pro):

d_pro={'1': ['1,2,3', '4,5,6'], '2': ['1,2,3', '4,5,6']}

I'd like to turn it into a dictionary whose values look like a list of lists (expected output in d_pro_list) for further processing:

d_pro_list= {'1': [['1,2,3'], ['4,5,6']], '2': [['1,2,3'], ['4,5,6']]}

I'm trying the given code:

d_pro_list={}
for k in d_pro.keys():
    for v in d_pro.values():
        for i in v:
            d_pro_list[k]= [i]

But the output is like:

d_pro_list= {'1': ['1,2,3,4,5,6'], '2': ['1,2,3,4,5,6']}

Can you please help me finding my mistakes? Thanks.

[bvdet]

I am unsure how you actually want it, so I will show both:

>>> 
>>> d_pro={'1': ['1,2,3', '4,5,6'], '2': ['1,2,3', '4,5,6']}
>>> for key in d_pro:
...     d_pro[key] = [item.split(",") for item in d_pro[key]]
...     
>>> d_pro
{'1': [['1', '2', '3'], ['4', '5', '6']], '2': [['1', '2', '3'], ['4', '5', '6']]}
>>> d_pro={'1': ['1,2,3', '4,5,6'], '2': ['1,2,3', '4,5,6']}
>>> for key in d_pro:
...     d_pro[key] = [[item] for item in d_pro[key]]
...     
>>> d_pro
{'1': [['1,2,3'], ['4,5,6']], '2': [['1,2,3'], ['4,5,6']]}
>>>