這是我的程序：

import os,time
from multiprocessing import Process

def run_proc(name):
    print('child process %s (%s) running ...' %(name,os.getpid()))
    print('process will start'+name)
    time.sleep(5)
    print('end  '+name)

if __name__ == '__main__': 
    print('parent process %s.' %os.getppid())
    for i in range(5):
        p = Process(target=run_proc,args=(str(i),))
        p.start()

time python3 test1.py
parent process 4049.
child process 0 (7054) running ...
process will start0
child process 1 (7055) running ...
process will start1
child process 3 (7057) running ...
process will start3
child process 2 (7056) running ...
process will start2
child process 4 (7058) running ...
process will start4
end 0
end 1
end 3
end 2
end 4

real 0m5.099s
user 0m0.080s
sys 0m0.008s

為何執(zhí)行結(jié)果不是
time python3 test1.py
parent process 4049.
child process 0 (7054) running ...
process will start0
child process 1 (7055) running ...
process will start1
child process 2 (7057) running ...
process will start3
child process 3 (7056) running ...
process will start2
child process 4 (7058) running ...
process will start4
end 0
end 1
end 2
end 3
end 4

real 0m5.099s
user 0m0.080s
sys 0m0.008s

既然是多進(jìn)程，為什么process2就一定要競(jìng)爭(zhēng)的過process3？
你這個(gè)例子中是對(duì)stdout的競(jìng)爭(zhēng)。
因?yàn)椋簆rocess2的產(chǎn)生在時(shí)間上，早于process3