从csv创建嵌套字典

import csv

def create_nested_dict_from_csv(file_path):
    nested_dict = {}
    with open(file_path, 'r') as file:
        reader = csv.DictReader(file)
        for row in reader:
            nested_dict[row['key']] = {}
            for key, value in row.items():
                if key != 'key':
                    nested_dict[row['key']][key] = value
    return nested_dict

key,name,age
1,John,25
2,Jane,30
3,Michael,35

{
    '1': {'name': 'John', 'age': '25'},
    '2': {'name': 'Jane', 'age': '30'},
    '3': {'name': 'Michael', 'age': '35'}
}