extractText() in PyPDF4 not working while working in PyPDF2

[michd89]

I have the following file: zen_of_python_corrupted.pdf According to the PDF's internal code the text content is somehow corrupted/compressed/differently encoded. However it works fine when opened with a PDF viewer.

Now I want to extract the text in Python. With PyPDF2 it looks like this:

import PyPDF2
reader = PyPDF2.PdfFileReader('zen_of_python_corrupted.pdf')
for pagenum in range(reader.getNumPages()):
    page = reader.getPage(pagenum)
    text = page.extractText()
    print(text)

And indeed it prints me the Zen of Python.

With PyPDF4 it is:

import PyPDF4
reader = PyPDF4.PdfFileReader('zen_of_python_corrupted.pdf')
for pagenum in range(reader.numPages):
    page = reader.getPage(pagenum)
    text = page.extractText()
    print(text)

But there I only get: Error -3 while decompressing data: incorrect data check

Since I don't find this particular error message within the code of PyPDF4 I consider that the error lies within a third party library. But still I find it odd that it works on the older PyPDF2. Do you have any idea about this? Does it work on your systems if you try it out?