Dict from list - HELP! PLEASE!

[cherry_cherry]

Why did you change the code to create new_dict outside of check()? Why do you insist on not returning an empty diction while insisting that returning an empty dictionary is what the code should do when it finds a duplicate name?

def check(seq):
    new_dict = {}
    for i in seq:
        for j in seq:
           if (j!=i and (i['numero'] == j['numero'])):
                print('Dupicate, I['numero'])
                return {}
           else:
                (key, value), *rest = i.items()
                new_dict[value] = dict(rest)
  
    return new_dict

Due to the fact that when executing the program with another function, new_dict is not empty.

This's my output when I test:

Output:
Donner le nom du fichier avec l'extension ['.json','.txt']: 
source1bad1.json
Voici le fichier choisi: source1bad1.json
Donner le nom du fichier avec l'extension ['.json','.txt']: 
source1bad1.json
Données source: 
[{'numero': '21212121', 'name': 'Dupond', 'first': 'Alain', 'notes': [11, 9.5, 5.5, 18]}, {'numero': '21202120', 'name': 'Bru', 'first': 'Mélissa', 'notes': [11, 19.5, 15, 8]}, {'numero': '20212023', 'name': 'Bosse', 'first': 'Mélissa', 'notes': [13, 19.5, 15, 8]}, {'numero': '20212023', 'name': 'Bosse', 'first': 'Mélissa', 'notes': [13, 19.5, 15, 8]}]

Dictionnaire extrait: 
21212121 - Dupond , Alain , [11, 9.5, 5.5, 18]
21202120 - Bru , Mélissa , [11, 19.5, 15, 8]
20212023 - Bosse , Mélissa , [13, 19.5, 15, 8]