Python :如何从使用元组索引的嵌套字典创建平面字典？

def flatten_dict(nested_dict, parent_key='', sep='.'):
    flattened_dict = {}
    for key, value in nested_dict.items():
        new_key = parent_key + sep + key if parent_key else key
        if isinstance(value, dict):
            flattened_dict.update(flatten_dict(value, new_key, sep=sep))
        else:
            flattened_dict[new_key] = value
    return flattened_dict

nested_dict = {
    'person': {
        'name': 'John',
        'age': 30,
        'address': {
            'street': '123 Main St',
            'city': 'New York',
            'state': 'NY'
        }
    },
    'company': {
        'name': 'ABC Inc',
        'location': 'San Francisco'
    }
}

flattened_dict = flatten_dict(nested_dict)
print(flattened_dict)

{
    'person.name': 'John',
    'person.age': 30,
    'person.address.street': '123 Main St',
    'person.address.city': 'New York',
    'person.address.state': 'NY',
    'company.name': 'ABC Inc',
    'company.location': 'San Francisco'
}