# -*- coding:utf-8 -*-from datetime import datetime def Main(): source_dir = '/data/u_lx_data/zhangqm/sh/yanjie/liuxuesheng/jz_yuanshi_list0206.txt' target_dir = '/data/u_lx_data/zhangqm/sh/yanjie/liuxuesheng/split/'  # 計數(shù)器 flag = 0  # 文件名 name = 1  # 存放數(shù)據(jù) dataList = []  print("開始。。。。。") print(datetime.now().strftime('%Y-%m-%d %H:%M:%S'))  with open(source_dir,'r') as f_source:  for line in f_source:   flag+=1   dataList.append(line)   if flag == 2000000:    with open(target_dir+"jz_yuanshi_list_"+str(name)+".txt",'w+') as f_target:     for data in dataList:      f_target.write(data)    name+=1    flag = 0    dataList = []     # 處理最后一批行數(shù)少于200萬行的 with open(target_dir+"jz_yuanshi_list_"+str(name)+".txt",'w+') as f_target:  for data in dataList:   f_target.write(data)  print("完成。。。。。") print(datetime.now().strftime('%Y-%m-%d %H:%M:%S')) if __name__ == "__main__": Main()