pip install gevent

from gevent import monkey  # 為了能識別time模塊的io
 monkey.patch_all()  # 必須放到被打補丁者的前面，如 time，socket 模塊之前
import gevent
import time
 def gf(name):
    print(f'{name}:我想打王者！！')
    # gevent.sleep(2)
    time.sleep(2)
    print(f'{name}:我想吃大餐！！！')
 def bf(name):
    print(f'{name}:一起打！！！')
    # gevent.sleep(2)
    time.sleep(2)
    print(f'{name}:一快去吃！！')
if __name__ == "__main__":
    start = time.time()
    # 創建協程對象
    g1 = gevent.spawn(gf, '張三')
    g2 = gevent.spawn(bf, '李四')
    # 開啟任務
    g1.join()
    g2.join()
    end = time.time()
    print(end - start)

import gevent
 def foo():
    print('Running in foo')
    gevent.sleep(2)
    print('Explicit context switch to foo again')
 
def bar():
    print('Explicit context to bar')
    gevent.sleep(2)
    print('Implicit context switch back to bar')
 gevent.joinall([
    gevent.spawn(foo),
    gevent.spawn(bar),
])