Manager
在Python中爲了更加方便的實現多進程的數據共享支持,multiprocessing模塊提供了一種數據共享進程的實現,該類進程可以通過Manager類創建,主要支持有兩類操作數據形式:列表(list)、字典(dict)
多進程寫入列表
import multiprocessing
def worker(list,item):#進程的處理函數
list.append("【%s】item = %s" % (multiprocessing.current_process().name,item))
def main():#主函數
manager = multiprocessing.Manager()#創建共享數據對象
mg_list = manager.list()
job_process = [multiprocessing.Process(target=worker,args=(mg_list,item,),name="進程-%s" % item) for item in range(3)]
for process in job_process:
process.start()
for process in job_process:
process.join()
print(mg_list)
if __name__ == '__main__':
main()
多進程寫入字典
import multiprocessing
def worker(dict,item):#進程的處理函數
dict.update({multiprocessing.current_process().name:item})
def main():#主函數
manager = multiprocessing.Manager()#創建共享數據對象
mg_list = manager.dict()
job_process = [multiprocessing.Process(target=worker,args=(mg_list,item,),name="進程-%s" % item) for item in range(3)]
for process in job_process:
process.start()
for process in job_process:
process.join()
print(mg_list)
if __name__ == '__main__':
main()