python按内容分割txt文件_python分割txt文件

from datetime importdatetimedefMain():

source_dir= 'E:/code/Modbus_RTU/pass.txt'target_dir= 'E:/code/Modbus_RTU/passs/'

#计数器

flag =0#文件名

name = 1

#存放数据

dataList =[]print("开始。。。。。")print(datetime.now().strftime('%Y-%m-%d %H:%M:%S'))

with open(source_dir,'r') as f_source:for line inf_source:

flag+= 1dataList.append(line)if flag == 100000:

with open(target_dir+ "pass_" + str(name) + ".txt", 'w+') as f_target:for data indataList:

f_target.write(data)

name+= 1flag=0

dataList=[]#处理最后一批行数少于200万行的

with open(target_dir + "pass_" + str(name) + ".txt", 'w+') as f_target:for data indataList:

f_target.write(data)print("完成。。。。。")print(datetime.now().strftime('%Y-%m-%d %H:%M:%S'))if __name__ == "__main__":

Main()