[Python] PyPDF2 - PdfFileReader - cannot extract text

I am looping through a directory and reading in numerous PDFs. I am extracting all text information from each page using a loop.

5/13 PDFs are throwing an error when trying to use .getNumPages(): Exception has occurred: ValueError invalid literal for int() with base 10: b''. I believe this error is occurring because the object (PyPDF2) is showing numPages: 0.

Current Code


dir = os.listdir(directory)

for f in dir:
object = PyPDF2.PdfFileReader(directory + '\\' + f)

NumPages = object.getNumPages()
text_output = "" # Initiate Variable

# Loop through all pages and extract/merge text
with open(directory + '\\' + f, mode='rb') as FileName:
reader = PyPDF2.PdfFileReader(FileName)
for p_num in range(0, NumPages):
page = reader.getPage(p_num)
text_output = text_output + '\n' + 'PAGE: ' + \
str(p_num + 1) + '\n' + page.extractText()


I added an image showing the object data where numPages: 0

I cannot figure out why only certain PDFs are having this issue. Any help would be appreciated!!

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