多进程处理数据时如何完整打印? - V2EX
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oldbird

多进程处理数据时如何完整打印?

  •  
  •   oldbird Jan 12, 2021 2817 views
    This topic created in 1932 days ago, the information mentioned may be changed or developed.

    from multiprocessing import Pool

    def do(item):

     print item ...... #处理 txt (每个大概 5 分钟) 

    if name=='main':

     items=glob.glob('*.txt') pool=Pool(5) pool.map(do,items) pool.close() pool.join() 

    items 为['1111.txt','2222.txt','3333.txt','4444.txt','5555.txt',......'9999.txt']

    运行时会穿插打印,比如 111221.33txt

    是否有办法将每项打印完整?

    8 replies    2021-02-28 13:49:46 +08:00
    maocat
        1
    maocat  
       Jan 12, 2021
    上锁,改同步
    crackhopper
        2
    crackhopper  
       Jan 12, 2021
    还可以用 queue,有个线程安全的 queue,用 multiprocessing.Manager,上面带了一个 queue 。
    BrokenVns
        3
    BrokenVns  
       Jan 12, 2021
    再启动一个日志进程,通过 socket 把每个进程的日志发送过去,由日志进程汇总打印。
    UN2758
        4
    UN2758  
       Jan 12, 2021
    可以用带队列功能的日志,比如 loguru
    jones2000
        6
    jones2000  
       Jan 12, 2021
    还不如每个进程一个日志文件, 每行日志加时间戳,最后显示的时候读多个文件日志,根据时间戳排序下。 省事
    oldbird
        7
    oldbird  
    OP
       Feb 28, 2021
    @jones2000 请问每个进程一个日志该怎么写? 目前只会对每个进程中的每个处理文件一个日志……
    jones2000
        8
    jones2000  
       Feb 28, 2021
    @oldbird 我直接用 log4net 插件, 它有统一的写日志的接口.
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