协成只有一个爬虫在工作

Question

始终只有一个爬虫在工作，请问原因

from gevent import monkey

monkey.patch_all()
from queue import Queue
import gevent

def fun(i,n):
    print(f'第{i}个爬虫，执行任务{n}')
def crawler(i):
    while not work.empty():
        n = work.get_nowait()
        fohttps://img-mid.csdnimg.cn/release/static/image/mid/ask/31020087987615.png "#left")
r m in range(3):
            try:
                fun(i,n)
                break
            except Exception as e:
                print(e)
work = Queue()
for i in range(50):
    work.put_nowait(i)
tasks = []
for i in range(5):
    task = gevent.spawn(crawler,i)
    tasks.append(task)

gevent.joinall(tasks)

Answer 1

看看你的系统的线程的模式，是不是阻塞了。