如何在python中对线程求和

import threading

# 定义线程求和函数
def sum_thread(start, end, result):
    total = 0
    for i in range(start, end):
        total += i
    result.append(total)

# 定义线程数量
num_threads = 4

# 定义每个线程处理的数据范围
start = 1
end = 1000000

# 创建线程列表和结果列表
threads = []
result = []

# 创建并启动线程
for i in range(num_threads):
    t = threading.Thread(target=sum_thread, args=(start, end, result))
    threads.append(t)
    t.start()

# 等待所有线程完成
for t in threads:
    t.join()

# 求和结果
total_sum = sum(result)
print("总和：", total_sum)