"File not open for reading“PDF分割后的Flask

Question

我正在尝试拆分一个PDF文件，该文件作为对此Flask API的post请求。我正在使用PyPDF2来处理pdf文件，当我试图发布新拆分的pdf文件时，我得到了这个错误："IOError: File not open for reading“。我尝试在发布之前再次打开它，但这导致了另一种类型的错误。

from flask import render_template, request
from app import app
from PyPDF2 import PdfFileWriter, PdfFileReader
import requests


@app.route('/')
def start():
    return render_template('home.html')


#upload-route
@app.route('/upload', methods = ['POST'])
def upload():
    pdf_data = None 
    split_pages = []
    if 'pdf' in request.files:
        incoming_pdf = request.files['pdf']
        pdf_data = PdfFileReader(incoming_pdf, 'rb') 
        for i in range(pdf_data.numPages):
            output = PdfFileWriter()
            output.addPage(pdf_data.getPage(i))
            with open("document-page%s.pdf" % i, "wb").read() as outputStream:
            ##new_page = output.write(outputStream)
                try:
                    split_pages.append(output)
                    print('Created: {}'.format("document-page%s.pdf" % i))
                    files  = {'userfile': outputStream }
                    upload_url ='*URL IM POSTING TO*'
                    auth_upload={
                        *AUTH KEYS*
                    }
                    r=requests.post(url=upload_url, files=files,data=auth_upload)
                finally:
                    outputStream.close()

    else:
        return "please upload a file to process"

我知道这可能是一个非常基本的问题，但我在这个问题上花了太多的时间，我不再清醒地思考。

Answer 1

我只是看了一下你的代码，然后呢？

from PyPDF2 import PdfFileWriter, PdfFileReader

with open('./reklamacja.pdf', 'rb') as my_pdf:
    pdf_data = PdfFileReader(my_pdf) 
    for i in range(pdf_data.numPages):
        output = PdfFileWriter()
        # output.addPage(pdf_data.getPage(i))
        output.insertPage(pdf_data.getPage(i))
        filename = "document-page%s.pdf" % i
        with open(filename, "wb") as outputStream:
            output.write(outputStream)

        with open(filename, 'rb') as file_to_send:
            r = requests.post('http://someurl.bin', files={'myname': file_to_send})


        { Some other code...}

将它构建到你的flask代码中，它应该可以工作。对我来说，你只是在'try‘块中有点过于复杂了:)希望这能解决你的问题。