脚本替换文件中的字符

Question

我在尝试替换文件中的字符时遇到了问题。

#!/usr/bin/env python 

with open("crypto.txt","r") as arquivo: 
    data = arquivo.read() 
for caracter in data: 
    if "a" in data: 
     data = data.replace("a","c") 
    elif "b" in data: 
     data = data.replace("b","d") 
    elif "c" in data: 
     data = data.replace("c","e") 
    elif "d" in data: 
     data = data.replace("d","f") 
    elif "e" in data: 
     data = data.replace("e","g") 
    elif "f" in data: 
     data = data.replace("f","h") 
    elif "g" in data: 
     data = data.replace("g","i") 
    elif "h" in data: 
     data = data.replace("h","j") 
    elif "i" in data: 
     data = data.replace("i","k") 
    elif "j" in data: 
     data = data.replace("j","l") 
    elif "k" in data: 
     data = data.replace("k","m") 
    elif "l" in data: 
     data = data.replace("l","n") 
    elif "m" in data: 
     data = data.replace("m","o") 
    elif "n" in data: 
     data = data.replace("n","p") 
    elif "o" in data: 
     data = data.replace("o","q") 
    elif "p" in data: 
     data = data.replace("p","r") 
    elif "q" in data: 
     data = data.replace("q","s") 
    elif "r" in data: 
     data = data.replace("r","t") 
    elif "s" in data: 
     data = data.replace("s","u") 
    elif "t" in data: 
     data = data.replace("t","v") 
    elif "u" in data: 
     data = data.replace("u","w") 
    elif "v" in data: 
     data = data.replace("v","x") 
    elif "w" in data: 
     data = data.replace("w","y") 
    elif "x" in data: 
     data = data.replace("x","z") 
    print data 

脚本读取一个名为crypto的txt文件，并开始根据上述语句替换字符。文件里面写着阿罗哈这个词。

这是结果我得到每次我运行该脚本

clohc 
elohe 
glohg 
ilohi 
iloji 
klojk 

如何解决呢？

Answer 1

什么Python的 string translate

import string 
with open("crypto.txt","r") as arquivo: 
    data = arquivo.read() 
    out = data.translate(string.maketrans("abcdefghijklmnopqrstuvw","defghijklmnopqrstuvwxyz")) 
    print out 

它直接equlal到perl tr功能。这是作品如下

图片介绍A转换为T，C转换为G，G转换为C和T转换为A

那就不要用字符串混淆翻译和字符串替换

字符串替换，替换整个单词。字符串翻译，由每个字符替换。