Create nested dictionary from directory

I have a folder with files named like this

Max_1.wav
Max_2.wav
Max_3.wav
Toto_1.wav
Toto_2.wav
Toto_3.wav
Valtteri_1.wav
Valtteri_2.wav
Valtteri_3.wav

I want to achieve this result

dict = {
    'Max': {
        'Max_1': {'path': 'database/Max_1.wav'},
        'Max_2': {'path': 'database/Max_2.wav'},
        'Max_3': {'path': 'database/Max_3.wav'}
    },

    'Toto': {
        'Toto_1': {'path': 'database/Toto_1.wav'},
        'Toto_2': {'path': 'database/Toto_2.wav'},
        'Toto_3': {'path': 'database/Toto_3.wav'}
    },

    'Valtteri': {
        'Valtteri_1': {'path': 'database/Valtteri_1.wav'},
        'Valtteri_2': {'path': 'database/Valtteri_2.wav'},
        'Valtteri_3': {'path': 'database/Valtteri_3.wav'}
    }

}

This is the code I’ve been working on and the result I’m getting

dict = {}

for x in os.listdir(directory):
    dict[x[:-6]] = {}

for x in os.listdir(directory):
    for key in dict:
        if x[:-6] == key:
            dict[key] = {x[:-4]: {'path': f'database/{x}'}}

Which gives me this. I think it’s because the keys are overwritten because of the for loop, but I can’t seem to wrap my head around a solution.

dict = {
    'Max': {
        'Max_3': {'path': 'database/Max_3.wav'}
    },

    'Toto': {
        'Toto_3': {'path': 'database/Toto_3.wav'}
    },

    'Valtteri': {
        'Valtteri_3': {'path': 'database/Valtteri_3.wav'}
    }

}

Help would be appreciated thank you

>Solution :

instead of using the assignment operator here:

dict[key] = {x[:-4]: {'path': f'database/{x}'}}

call the update method on the dictionary:

dict[key].update({x[:-4]:{'path': f'database/{x}'}})