用pdfrw处理后无法移动删除PDF文件。

Posted 2021-03-19

我已经更新了这个问题，包含了大部分的代码，因为我觉得可能有一些代码是互相阻塞的......可以通过简单地添加一个或两个pdf文件到你的c: emp文件夹（在windows下）来测试.我刚刚开始使用Python，所以可能缺少基本的东西......。

import glob
from datetime import datetime
from pathlib import Path
import PyPDF4
from pdfrw import PdfReader, PdfWriter


def safe_open_pdf(pdf):
    pdf_reader = None
    result = True

    file = open(pdf, 'rb')
    try:
        pdf_reader = PyPDF4.PdfFileReader(file)
        result = True
    except:
        # some older PDF files on my disk raise a missing EOF error, which cannot be handled by PyPDF4
        print(pdf.split('\')[-1] + " needs to be fixed")
        result = False

    if not result:
        # if file had EOF error, I "rebuild" it with PdfReader and PdfWriter
        x = PdfReader(pdf)
        y = PdfWriter()
        y.addpages(x.pages)
        y.write(pdf)
        pdf_reader = PyPDF4.PdfFileReader(file)

    return pdf_reader


def move_processed_pdf(source_file):
    Path(new_path).mkdir(parents=True, exist_ok=True)

    print("Copying to " + new_path + new_file)

    f = open(PDFFile, 'rb')
    x = PdfReader(f)
    y = PdfWriter()
    y.addpages(x.pages)
    y.write(new_path + new_file)

    f.close()
    # time.sleep(5)
    Path(PDFFile).unlink()


if __name__ == '__main__':

    relevant_path = 'C:\temp\'
    file_count = 0
    new_path = 'C:\temp\processed\'

    for PDFFile in glob.iglob(relevant_path + '*.pdf', recursive=True):

        new_file = datetime.today().strftime('%Y-%m-%d') + PDFFile.split('\')[-1]

        print('Processing File: ' + PDFFile.split('\')[-1])

        pdfReader = safe_open_pdf(PDFFile)
        file_count += 1
        num_pages = pdfReader.numPages

        print(num_pages)

        page_count = 0
        text = ''

        while page_count < num_pages:
            pageObj = pdfReader.getPage(page_count)
            page_count += 1
            text += pageObj.extractText()

        # Main processing occurs here

        move_processed_pdf(PDFFile)

我得到的问题是 PermissionError: [WinError 32] The process cannot access the file because it is being used by another process.

文件夹和文件存在。

有什么办法吗？