Python模拟分割大文件以及多线程处理的实现方法

#!/usr/bin/env python
#--*-- coding:utf-8 --*--
from random import randint
from time import ctime
from time import sleep
import queue
import threading
class MyTask(object):
 """具体的任务类"""
 def __init__(self, name):
 self.name = name
 self._work_time = randint(1, 5)
 def work(self):
 print("Task %s is start : %s, sleep time= %d" % (self.name, ctime(), self._work_time))
 sleep(self._work_time)
 print("Task %s is end : %s" % (self.name, ctime()))
class MyThread(threading.Thread):
 """多线程的类"""
 def __init__(self, my_queue):
 self.my_queue = my_queue
 super(MyThread, self).__init__()
 def run(self):
 while True:
 if self.my_queue.qsize() > 0:
 self.my_queue.get().work()
 else:
 break
def print_split_line(num=30):
 print("*" * num)
if __name__ == "__main__":
 print_split_line()
 import my_read_file
 # 分割文件
 sf = my_read_file.SplitFiles(r"F:multiple_thread_read_file.txt", line_count=300)
 file_num = sf.split_file()
 queue_length = file_num
 my_queue = queue.LifoQueue(queue_length)
 threads = []
 for i in range(queue_length):
 file_name = sf.get_part_file_name(i)
 mt = MyTask(file_name)
 my_queue.put_nowait(mt)
 for i in range(queue_length):
 mtd = MyThread(my_queue)
 threads.append(mtd)
 for i in range(queue_length):
 threads[i].start()
 for i in range(queue_length):
 threads[i].join()
 print_split_line()