现有原文件：
1 Somehow, it seems the love I knew was always the most destructive kind 2 不知为何，我经历的爱情总是最具毁灭性的的那种 3 Yesterday when I was young 4 昨日当我年少轻狂 5 The taste of life was sweet 6 生命的滋味是甜的 7 As rain upon my tongue 8 就如舌尖上的雨露 9 I teased at life as if it were a foolish game 10 我戏弄生命 视其为愚蠢的游戏 11 The way the evening breeze 12 就如夜晚的微风 13 May tease the candle flame 14 逗弄蜡烛的火苗 15 The thousand dreams I dreamed 16 我曾千万次梦见 17 The splendid things I planned 18 那些我计划的绚丽蓝图 19 I always built to last on weak and shifting sand 20 但我总是将之建筑在易逝的流沙上 21 I lived by night and shunned the naked light of day 22 我夜夜笙歌 逃避白昼赤裸的阳光 23 And only now I see how the time ran away 24 事到如今我才看清岁月是如何匆匆流逝 25 Yesterday when I was young 26 昨日当我年少轻狂 27 So many lovely songs were waiting to be sung 28 有那么多甜美的曲儿等我歌唱 29 So many wild pleasures lay in store for me 30 有那么多肆意的快乐等我享受 31 And so much pain my eyes refused to see 32 还有那么多痛苦 我的双眼却视而不见 33 I ran so fast that time and youth at last ran out 34 我飞快地奔走 最终时光与青春消逝殆尽 35 I never stopped to think what life was all about 36 我从未停下脚步去思考生命的意义 37 And every conversation that I can now recall 38 如今回想起的所有对话 39 Concerned itself with me and nothing else at all 40 除了和我相关的 什么都记不得了 41 The game of love I played with arrogance and pride 42 我用自负和傲慢玩着爱情的游戏 43 And every flame I lit too quickly, quickly died 44 所有我点燃的火焰都熄灭得太快 45 The friends I made all somehow seemed to slip away 46 所有我交的朋友似乎都不知不觉地离开了 47 And only now I'm left alone to end the play, yeah 48 只剩我一个人在台上来结束这场闹剧 49 Oh, yesterday when I was young 50 噢 昨日当我年少轻狂 51 So many, many songs were waiting to be sung 52 有那么那么多甜美的曲儿等我歌唱 53 So many wild pleasures lay in store for me 54 有那么多肆意的快乐等我享受 55 And so much pain my eyes refused to see 56 还有那么多痛苦 我的双眼却视而不见 57 There are so many songs in me that won't be sung 58 我有太多歌曲永远不会被唱起 59 I feel the bitter taste of tears upon my tongue 60 我尝到了舌尖泪水的苦涩滋味 61 The time has come for me to pay for yesterday 62 终于到了付出代价的时间 为了昨日 63 When I was young 64 当我年少轻狂
如果我们要修改其中一些文字，可以运用以下：
1 y = open('yesterday','r') 2 y_new = open('yesterday_new','w') 3 tihuan = input('输入要替换的替换：') 4 tihuan_new = input('输入要替换的替换：') 5 6 for i in y: 7 if tihuan in i: 8 i = i.replace(tihuan,tihuan_new) 9 y_new.write(i)
找出yesterday文件，如果要修改什么，可以input输入:,比如要修改其中的
1 So many wild pleasures lay in store for me 2 有那么多肆意的快乐等我享受
把我修改成Tuskasa：
可以
tihuan = input('输入要替换的替换：')
输入：有那么多肆意的快乐等我享受
再输入：有那么多肆意的快乐等Tuskasa享受
就会创建一个新的文件并修改（注意是创建一个新的文件，这样我们就可以保存原文件，避免丢失）
或者可以另外定义：
1 import sys 2 find_str = sys.argv[1] 3 replace_str = sys.argv[2] 4 5 y = open('yesterday','r') 6 y_new = open('yesterday_new','w') 7 8 for i in y: 9 if find_str in i: 10 i = i.replace(find_str,replace_str) 11 y_new.write(i)
注意一定要记得close()文件