multiprocess模块

Question

调用字程序sub_process= multiprocessing.process(target=copy_file,args=(file_name,source_dir,dest_dir))然后报错TypeError: 'module' object is not callable。 我得pip list有这个模块，为啥显示调用不了

Answer 1

process 的P要大写,sub_process= multiprocessing.Process(target=copy_file,args=(file_name,source_dir,dest_dir));路径传入错误，改source_dir,dest_dir为source_path,dest_path;写入文件的地方没有传入写入内容。改成如下就能运行。

from multiprocessing import Process
import os

def copy_file(source_dir,dest_dir): 
    file_list = os.listdir(source_dir)
    for file_name in file_list:
        source_path=source_dir+'/'+file_name 
        dest_path=dest_dir+'/'+file_name 
        with open(source_path,'rb') as source_file: 
            with open(dest_path,'wb') as dest_file: 
                while True: 
                    data=source_file.read(1024) 
                    if data:
                        dest_file.write(source_file.read())
                    else: break
if __name__ == '__main__':
    source_dir = 'F:/2021/answerQ/data/trainer'
    dest_dir = 'F:/2021/answerQ/data/2017'
    sub_process = Process(target=copy_file, args=(source_dir, dest_dir))
    sub_process.start()
    sub_process.join()