PyPDF 2 Decrypt Not Working

Question

Currently I am using the PyPDF 2 as a dependency.

I have encountered some encrypted files and handled them as you normally would (in the following code):

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Answer 1

The following code could solve this problem:

import os
import PyPDF2
from PyPDF2 import PdfFileReader

fp = open(filename)
pdfFile = PdfFileReader(fp)
if pdfFile.isEncrypted:
    try:
        pdfFile.decrypt('')
        print('File Decrypted (PyPDF2)')
    except:
        command = ("cp "+ filename +
            " temp.pdf; qpdf --password='' --decrypt temp.pdf " + filename
            + "; rm temp.pdf")
        os.system(command)
        print('File Decrypted (qpdf)')
        fp = open(filename)
        pdfFile = PdfFileReader(fp)
else:
    print('File Not Encrypted')