如何从脚本中提取PDF文档的标题以进行重命名? [英] How to extract the title of a PDF document from within a script for renaming?

问题描述

我的计算机中有成千上万个PDF文件，它们的名称从a0001.pdf到a3621.pdf，每个文件的内部都有一个标题.例如a0001.pdf的碳酸铝"，a0002.pdf的硝酸铝"等，我想提取它们以重命名我的文件.

我使用此程序重命名文件:

path=r"C:\Users\YANN\Desktop\..."

old='string 1'
new='string 2'

def rename(path,old,new):
    for f in os.listdir(path):
        os.rename(os.path.join(path, f), os.path.join(path, f.replace(old, new)))

rename(path,old,new)

我想知道是否存在解压缩PDF文件中嵌入的标题以重命名该文件的解决方案?

解决方案

安装软件包

这不能用普通的Python解决.您将需要一个外部软件包，例如 pdfrw ，该软件包可以读取PDF元数据.使用标准的Python包管理器pip，安装非常容易.

在 Windows 上，首先使用shell命令确保您具有最新版本的pip:

python -m pip install -U pip

在 Linux 上:

pip install -U pip

在两个平台上，然后使用

import os
from pdfrw import PdfReader

path = r'C:\Users\YANN\Desktop'


def renameFileToPDFTitle(path, fileName):
    fullName = os.path.join(path, fileName)
    # Extract pdf title from pdf file
    newName = PdfReader(fullName).Info.Title
    # Remove surrounding brackets that some pdf titles have
    newName = newName.strip('()') + '.pdf'
    newFullName = os.path.join(path, newName)
    os.rename(fullName, newFullName)


for fileName in os.listdir(path):
    # Rename only pdf files
    fullName = os.path.join(path, fileName)
    if (not os.path.isfile(fullName) or fileName[-4:] != '.pdf'):
        continue
    renameFileToPDFTitle(path, fileName)

软件包安装

pip install pdfrw

代码

我结合了zeebonk和user2125722的特性，编写了非常紧凑和易读的内容，与您的原始代码非常接近:

import os
from pdfrw import PdfReader

path = r'C:\Users\YANN\Desktop'


def renameFileToPDFTitle(path, fileName):
    fullName = os.path.join(path, fileName)
    # Extract pdf title from pdf file
    newName = PdfReader(fullName).Info.Title
    # Remove surrounding brackets that some pdf titles have
    newName = newName.strip('()') + '.pdf'
    newFullName = os.path.join(path, newName)
    os.rename(fullName, newFullName)


for fileName in os.listdir(path):
    # Rename only pdf files
    fullName = os.path.join(path, fileName)
    if (not os.path.isfile(fullName) or fileName[-4:] != '.pdf'):
        continue
    renameFileToPDFTitle(path, fileName)

I have thousands of PDF files in my computers which names are from a0001.pdf to a3621.pdf, and inside of each there is a title; e.g. "aluminum carbonate" for a0001.pdf, "aluminum nitrate" in a0002.pdf, etc., which I'd like to extract to rename my files.

I use this program to rename a file:

path=r"C:\Users\YANN\Desktop\..."

old='string 1'
new='string 2'

def rename(path,old,new):
    for f in os.listdir(path):
        os.rename(os.path.join(path, f), os.path.join(path, f.replace(old, new)))

rename(path,old,new)

I would like to know if there is/are solution(s) to extract the title embedded in the PDF file to rename the file?

解决方案

Installing the package

This cannot be solved with plain Python. You will need an external package such as pdfrw, which allows you to read PDF metadata. The installation is quite easy using the standard Python package manager pip.

On Windows, first make sure you have a recent version of pip using the shell command:

python -m pip install -U pip

On Linux:

pip install -U pip

On both platforms, install then the pdfrw package using

pip install pdfrw

The code

I combined the ansatzes of zeebonk and user2125722 to write something very compact and readable which is close to your original code:

import os
from pdfrw import PdfReader

path = r'C:\Users\YANN\Desktop'


def renameFileToPDFTitle(path, fileName):
    fullName = os.path.join(path, fileName)
    # Extract pdf title from pdf file
    newName = PdfReader(fullName).Info.Title
    # Remove surrounding brackets that some pdf titles have
    newName = newName.strip('()') + '.pdf'
    newFullName = os.path.join(path, newName)
    os.rename(fullName, newFullName)


for fileName in os.listdir(path):
    # Rename only pdf files
    fullName = os.path.join(path, fileName)
    if (not os.path.isfile(fullName) or fileName[-4:] != '.pdf'):
        continue
    renameFileToPDFTitle(path, fileName)

这篇关于如何从脚本中提取PDF文档的标题以进行重命名?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！