我想按日期对列表列表进行分组，并对日期匹配的值求和

data = [
    {'date': '2022-01-01', 'value': 10},
    {'date': '2022-01-02', 'value': 20},
    {'date': '2022-01-01', 'value': 30},
    {'date': '2022-01-03', 'value': 40},
    {'date': '2022-01-02', 'value': 50}
]

result = {}

for item in data:
    date = item['date']
    value = item['value']
    if date in result:
        result[date] += value
    else:
        result[date] = value

# 按日期排序
sorted_result = sorted(result.items(), key=lambda x: x[0])

for date, value in sorted_result:
    print(f"日期：{date}，求和值：{value}")