扁平化字典

def flatten_dict(d, parent_key='', sep='.'):
    items = []
    for k, v in d.items():
        new_key = f"{parent_key}{sep}{k}" if parent_key else k
        if isinstance(v, dict):
            items.extend(flatten_dict(v, new_key, sep=sep).items())
        else:
            items.append((new_key, v))
    return dict(items)

nested_dict = {
    'a': 1,
    'b': {
        'c': 2,
        'd': {
            'e': 3
        }
    }
}

flattened_dict = flatten_dict(nested_dict)
print(flattened_dict)

{'a': 1, 'b.c': 2, 'b.d.e': 3}

def unflatten_dict(d, sep='.'):
    result = {}
    for k, v in d.items():
        keys = k.split(sep)
        current = result
        for key in keys[:-1]:
            current = current.setdefault(key, {})
        current[keys[-1]] = v
    return result

original_dict = unflatten_dict(flattened_dict)
print(original_dict)

{'a': 1, 'b': {'c': 2, 'd': {'e': 3}}}