这是一个初秋的夜晚,天气晴朗,一丝风都没有,抬头仰望,湛蓝的天空中,挂着一轮金黄的圆月。月亮把它那淡淡的月光毫不吝啬地撒向洞庭湖。圆月四周,稀稀疏疏地点缀着几颗星星,那几颗星星也把微弱的光源聚集起来,撒向月光下的湖面。这下,洞庭湖真是美极了。
<pre name="code" class="python">creazy.txt文件有4G,逐行读取其内容并写入monday.txt文件里。
def creazyRead(): ''''' with open("e:creazy.txt","r") as cr: for line in cr: print line ''' ms = open("e:creazy.txt") for line in ms: with open("e:monday.txt","a") as mon: mon.write(line)
另一种方法使用readlines实现:
def creazyRead(): ms = open("e:creazy.txt") for line in ms.readlines(): with open("e:monday.txt","a") as mon: mon.write(line)
以上这篇python实现读取大文件并逐行写入另外一个文件就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。