PDFwriter object not writing to memory

Question

PyPDF2 Pdfwriter is unable to write the pdf in memory. I checked this code earlier and it was working fine. I returned to the project after few months and it started giving me errors. i dont know what went wrong.

import io
from PyPDF2 import PdfFileWriter, PdfFileReader

def mergePDFs(InputFile1,InputFile2,OutputFile):
    existing_pdf = PdfFileReader(open(InputFile1, "rb"))
    output = PdfFileWriter()
    new_pdf = PdfFileReader(open(InputFile2, "rb"))
    output.cloneDocumentFromReader(new_pdf)
    if existing_pdf.getNumPages() > output.getNumPages():
        while existing_pdf.getNumPages() != output.getNumPages():
            output.addBlankPage()
    temp = io.BytesIO()
    output.write(temp)
    new_pdf = PdfFileReader(temp)
    
    output = PdfFileWriter()
    for PageNum in range(existing_pdf.getNumPages()):
        page = existing_pdf.getPage(PageNum)
        page.mergePage(new_pdf.getPage(PageNum))
        output.addPage(page)
    outputStream = open(OutputFile, "wb")
    output.write(outputStream)
    outputStream.close()

mergePDFs('HQ.pdf',"LSF.pdf","Mixed.pdf")

Getting following Error :

PdfReadWarning: Object 25 0 not defined. [pdf.py:1628]
Traceback (most recent call last):
  File "c:/Users/Ram Vikas/Documents/PythonyRV/Tester.py", line 29, in <module>
    mergePDFs('LSF.pdf',"HQ.pdf","Mixed.pdf")
  File "c:/Users/Ram Vikas/Documents/PythonyRV/Tester.py", line 17, in mergePDFs
    output.write(temp)
  File "D:\Python3\lib\site-packages\PyPDF2\pdf.py", line 482, in write
    self._sweepIndirectReferences(externalReferenceMap, self._root)
  File "D:\Python3\lib\site-packages\PyPDF2\pdf.py", line 571, in _sweepIndirectReferences
    self._sweepIndirectReferences(externMap, realdata)
  File "D:\Python3\lib\site-packages\PyPDF2\pdf.py", line 547, in _sweepIndirectReferences
    value = self._sweepIndirectReferences(externMap, value)
  File "D:\Python3\lib\site-packages\PyPDF2\pdf.py", line 577, in _sweepIndirectReferences
    newobj = data.pdf.getObject(data)
  File "D:\Python3\lib\site-packages\PyPDF2\pdf.py", line 1631, in getObject
    raise utils.PdfReadError("Could not find object.")
PyPDF2.utils.PdfReadError: Could not find object.

Help.

PDFwriter object not writing to memory

0 Answers0