使用python一次更改多个文本文件的第一个单词

问题描述

我有很多文本文件

我想更改他们的第一个单词，我尝试了此操作，但没有成功。 我想阅读所有文本文件，打开它们，然后将第一个单词（8个字符）更改为一个相同的短语

import os

for filename in os.listdir("data"):
    if filename.endswith(".txt"):
        content = filename.read()
        with open(os.path.join("data",filename),"w") as outfile:
            outfile.write("new word" + content[8:])  

错误：

Traceback (most recent call last): File "change.py",line 5,in <module> content = filename.read() AttributeError: 'str' object has no attribute 'read'

解决方法

根据对您问题的理解，我提出了此解决方案。请让我知道这是否不是您想要的解决方案。

import os



def fread(file):
    with open(file,"r") as f:
        lines = f.readlines()
        f.close()
        return lines



def replace(file,folder):
    lines = fread(file)
    with open(file,'w') as four:
        
        for x in lines:
            print(x[0])
            s = x[0] # first word with n characters
    
            fout.write(x.replace(s,'your desired replacement'))
        fout.close()

    

if __name__ == "__main__":
    folder = "your folder containing files"
    curretndir = os.getcwd()
    os.chdir(folder)
    for files in os.listdir(folder):
        if files.endswith(".txt"):
            replace(files,folder)

如果我知道文件的内容，那就太好了。根据需要，您必须使用.split（）函数。我假设您的内容采用以下形式： word1 word2 word3 ... \ n wordn wordn + 1 .... \ n

,

我已标记您的错误。

import os

for filename in os.listdir("data"):
    if filename.endswith(".txt"):
        with open(os.path.join("data",filename),"r") as f: #<<-- you forgot to open the file like this
            content = f.read()
        with open(os.path.join("data","r") as outfile: #<<-- you are trying to read the file by using "r" change this to "w"
            outfile.write("new word" + content[8:]) #<<-- you are writing to the file

,

import os

for filename in os.listdir("data"):
    if filename.endswith(".txt"):
        with open(os.path.join("data","r") as f:
            content = f.read()
        with open(os.path.join("data","w") as outfile: 
            outfile.write("new word" + content[8:])