我刚开始使用Python 3并遇到了以下问题:
我从我的论文中下载了大量来自不同期刊的PDF,但它们都以他们的DOI命名,而不是以“作者(年) - 标题”的格式命名。 根据期刊的名称和数量,文档保存在不同的目录中,例如:
/Journal 1/
/Vol. 1/
file1.pdf
file1.txt
file2.pdf
file2.txt
filen.pdf
filen.txt
/Vol. 2/
file1.pdf
file1.txt
/Journal 2/
...
因为我不知道如何用Python阅读PDF的内容,所以我写了一个非常简短的bash脚本,它将PDF转换为简单的TXT文件。 pdf和txt文件具有相同的名称,具有不同的文件扩展名。
我想重命名所有PDF文件,幸运的是每个文件的连续文本中都有一个字符串,我可以使用。此变量字符串位于两个静态字符串之间:
"Cite this article as: " AUTHOR/YEAR/TITLE ", Journal name".
如何让Python进入每个目录,阅读TXT / PDF的内容,在两个固定字符串之间提取变量字符串,然后重命名相应的PDF文件?
如果有人知道如何使用Python 3,我会非常感激。
答案 0 :(得分:0)
最后让它发挥作用:
#__author__ = 'Telefonmann'
# -*- coding: utf-8 -*-
import os, re, ntpath, shutil
for root, dirs, files in os.walk(os.getcwd()):
for file in files: # loops through directories and files
if file.endswith(('.txt')): # only processes txt files
full_path = ntpath.splitdrive(ntpath.join(root, file))[1]
# builds correct path under Win 7 (and probably other NT-systems
with open(full_path, 'r', encoding='utf-8') as f:
content = f.read().replace('\n', '') # remove newline
r = re.compile('To\s*cite\s*this\s*article:\s*(.*?),\s*Journal\s*of\s*Quantitative\s*Linguistics\s*,')
m = r.search(content)
# finds substring inbetween "To cite this article: " and "Journal of Quantitative Linguistics,"
# also finds typos like "Journal ofQuantitative ..."
if m:
full_title = m.group(1)
print("full_title: {0}".format(full_title))
full_title = (full_title.replace('<','') # removes/replaces forbidden characters in Windows file names
.replace('>','')
.replace(':',' -')
.replace('"','')
.replace('/','')
.replace('\\','')
.replace('|','')
.replace('?','')
.replace('*',''))
pdf_name = full_path.replace('txt','pdf')
# since txt and pdf files only differ in their format extension I simply replace .txt with .pdf
# to get the right name
print('File: '+ file)
print('Full Path: ' + full_path)
print('Full Title: ' + full_title)
print('PDF Name: ' + pdf_name)
print('....................................')
# for trouble shooting
dirname = ntpath.dirname(pdf_name)
new_path = ntpath.join(dirname, "{0}.pdf".format(full_title))
if ntpath.exists(full_path):
print("all paths found")
shutil.copy(pdf_name, new_path)
# makes a copy of the pdf file with the new name in the respective directory