池模块 -进程池 -线程池

池模块

线程池concurrent.futures.ThreadPoolExecutor

from concurrent.futures import ThreadPoolExecutor
from time import sleep

tpool = ThreadPoolExecutor(max_workers=5) #设置线程最大数量

def func(i):
sleep(1)
print(i)

for i in range(20):
tpool.submit(func, i)
tpool.shutdown() #等待所有子线程运行结束
print('主线程在这里')

• t.result() 获取函数的返回值

进程池concurrent.futures.ProcessPoolExecutor

from concurrent.futures import ProcessPoolExecutor
from time import sleep
tpool = ProcessPoolExecutor(max_workers=5) #这是最大进程数

def func(i):
sleep(1)
print(i)

for i in range(20):
tpool.submit(func, i)
tpool.shutdown() #等待所有子进程运行结束
print('主线程在这里')
- t.result() 获取函数的返回值