process name and is_alive

process name and is_alive

is_alive (the child immediately to see whether the results of survival)

from multiprocessing import Process
import time
def foo():
    print('进程 start')
    time.sleep(2)
    print('进程  end')

if __name__ == '__main__':
    p=Process(target=foo)
    p.start()
    print(p.is_alive())#True
    time.sleep(5)
    print(p.is_alive()) # 代码运行完了就算死了 False
    print('主')

name (see sub-process name)

Do not set the process name of the default settings will give the child the name of Process-1

from multiprocessing import Process,current_process
import time
def foo():
    print('进程 start')
    print('-------',current_process().name)
    time.sleep(2)
    print('进程  end')

if __name__ == '__main__':
    p=Process(target=foo)
    p2=Process(target=foo)
    p3=Process(target=foo,name='rocky')
    p.start()
    p2.start()
    p3.start()
    print(p.name)
    print(p2.name)
    print(p3.name)
    print('主')