1. 代码
import time
import asyncio
from concurrent.futures import ThreadPoolExecutor, ProcessPoolExecutor
def job(num):
print(f'job {num}: start...')
time.sleep(num)
print(f'job {num}: end ...')
def elasped(func, num, s):
print('-'*3, s, '-'*3)
t0 = time.time()
func(num)
print(f'Complished in {time.time()-t0:.2f}s')
def sync(num):
for i in range(1, num):
job(i)
def thread_async(num):
workers = num
with ThreadPoolExecutor(workers) as executor:
executor.map(job, range(1, num))
def process_async(num):
workers = num
with ProcessPoolExecutor(workers) as executor:
executor.map(job, range(1, num))
async def coroutine_async(num):
async def job(num):
print(f'job {num}: start...')
await asyncio.sleep(num)
print(f'job {num}: end ...')
await asyncio.gather(*[job(i) for i in range(1, num)])
def elasped2(func, num, s):
print('-'*3, s, '-'*3)
t0 = time.time()
asyncio.run(func(num))
print(f'Complished in {time.time()-t0:.2f}s')
if __name__ == '__main__':
elasped(sync, 4, '同步执行')
elasped(thread_async, 4, '异步执行(多线程)')
elasped(process_async, 4, '异步执行(多进程)')
elasped2(coroutine_async, 4, '异步执行(协程)')
2. 结果
--- 同步执行 ---
job 1: start...
job 1: end ...
job 2: start...
job 2: end ...
job 3: start...
job 3: end ...
Complished in 6.00s
--- 异步执行(多线程) ---
job 1: start...
job 2: start...
job 3: start...
job 1: end ...
job 2: end ...
job 3: end ...
Complished in 3.00s
--- 异步执行(多进程) ---
job 1: start...
job 2: start...
job 3: start...
job 1: end ...
job 2: end ...
job 3: end ...
Complished in 3.03s
--- 异步执行(协程) ---
job 1: start...
job 2: start...
job 3: start...
job 1: end ...
job 2: end ...
job 3: end ...
Complished in 3.00s
