如何将我的python代码一次应用于文件夹中的所有文件，以及如何为每个后续输出文件创建新名称? [英] How do I apply my python code to all of the files in a folder at once, and how do I create a new name for each subsequent output file?

问题描述

我正在使用的代码接收一个.pdf文件，并输出一个.txt文件.我的问题是，如何创建一个循环(可能是for循环)，该循环在以".pdf"结尾的文件夹中的所有文件上一次又一次地运行代码?此外，如何在每次循环运行时更改输出，以便每次可以写入一个与输入文件同名的新文件(即1_pet.pdf> 1_pet.txt，2_pet.pdf> 2_pet).txt等)

The code I am working with takes in a .pdf file, and outputs a .txt file. My question is, how do I create a loop (probably a for loop) which runs the code over and over again on all files in a folder which end in ".pdf"? Furthermore, how do I change the output each time the loop runs so that I can write a new file each time, that has the same name as the input file (ie. 1_pet.pdf > 1_pet.txt, 2_pet.pdf > 2_pet.txt, etc.)

这是到目前为止的代码:

Here is the code so far:

path="2_pet.pdf"
content = getPDFContent(path)
encoded = content.encode("utf-8")
text_file = open("Output.txt", "w")
text_file.write(encoded)
text_file.close()

推荐答案

创建一个封装您要对每个文件执行的功能的函数.

Create a function that encapsulates what you want to do to each file.

import os.path

def parse_pdf(filename):
    "Parse a pdf into text"
    content = getPDFContent(filename)
    encoded = content.encode("utf-8")
    ## split of the pdf extension to add .txt instead.
    (root, _) = os.path.splitext(filename)
    text_file = open(root + ".txt", "w")
    text_file.write(encoded)
    text_file.close()

然后将此功能应用于文件名列表，如下所示:

Then apply this function to a list of filenames, like so:

for f in files:
    parse_pdf(f)

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