如何替换多个文本文件中的多个字符串？

Question

所以！我对Python相当陌生，我有一系列文件需要用其他行替换某些行。在

我知道这可能有点令人困惑，但让我解释一下。在

所以我有一个满是文件的目录，让我们用temp/。在

我需要使用Python迭代该目录中的所有文件，并修改每个文件，替换某些行。在

为此，我想要一个名为新闻字符串.txt

ReplaceWithThis
iLikeReplacingStuff

我想用这些字符串替换中的行旧字符串.txt

^{pr2}$

Answer 1

代码是根据海报的要求定制的。在

import os

folderLocation = "temp/"

lookup = dict()

with open("newString.txt","r") as values:
    with open("oldString.txt","r") as keys:
        keyLines = keys.readlines()
        valueLines = values.readlines()
        for i, line in enumerate(keyLines):
            lookup[line] = valueLines[i]


for subdir, dirs, files in os.walk(folderLocation):
    for fileIn in files:
        os.rename(folderLocation + fileIn, folderLocation + "old_" + fileIn)
        with open (folderLocation + "old_" + fileIn, "r") as fi:
            with open(folderLocation + fileIn, "w") as fo:
                for line in fi:
                    if line in lookup:
                        fo.write(lookup[line])
                    else:
                        fo.write(line)