Multiprocessing find process index?

Question

Let's say we use multiprocessing.Pool(n) , is there a ways to find which of the n processes we're in? To illustrate: In the following snippet I'd like to find a way to know what index of the process the job function is. I'm not talking about the process number of the system, just a local enumeration of the processes spawned by Pool .

from multiprocessing import Pool
def job(x):
    process_idx = None # index 1,2,3,4?
    print(f'job {x} process {process_idx}')
with Pool(4) as p:
    p.imap(job, range(10))

Answer 1

我们可以通过使用找到进程索引（基于1的索引）

process_idx = multiprocessing.current_process()._identity[0]