获取python中groupBy的最新字符串值

import itertools

def get_latest_group_by_value(data, key):
    sorted_data = sorted(data, key=key)
    grouped_data = itertools.groupby(sorted_data, key=key)
    latest_values = []
    
    for group, group_items in grouped_data:
        latest_value = next(group_items)[-1]
        latest_values.append(latest_value)
    
    return latest_values

# 示例数据
data = [
    {'name': 'John', 'age': 25, 'group': 'A'},
    {'name': 'Alice', 'age': 30, 'group': 'B'},
    {'name': 'Bob', 'age': 28, 'group': 'A'},
    {'name': 'Charlie', 'age': 35, 'group': 'B'},
    {'name': 'David', 'age': 27, 'group': 'A'}
]

# 按照 'group' 字段进行分组，并获取每组的最新 'name' 值
latest_names = get_latest_group_by_value(data, key=lambda x: x['group'])
print(latest_names)

['Charlie', 'David']