Getting KeyError: '/Kids' for getNumPages

[bikashgupta11]

For a specific PDF, its giving error KeyError: '/Kids'

Code

from PyPDF2 import PdfFileReader

reader = PdfFileReader("example.pdf")
reader.getNumPages()

Traceback

Stacktrace
pageNum = src_pdf.getNumPages()
File "C:\Miniconda3\envs\1\lib\site-packages\PyPDF2\pdf.py", line 1155, in getNumPages
self._flatten()
File "C:\Miniconda3\envs\1\lib\site-packages\PyPDF2\pdf.py", line 1520, in _flatten
self._flatten(page.getObject(), inherit, **addt)
File "C:\Miniconda3\envs\1\lib\site-packages\PyPDF2\pdf.py", line 1516, in _flatten
for page in pages["/Kids"]:
File "C:\Miniconda3\envs\1\lib\site-packages\PyPDF2\generic.py", line 516, in getitem
return dict.getitem(self, key).getObject()
KeyError: '/Kids'

Document Info

[bikashgupta11]

Analysis:-
IndirectObject of Kids has type "Pages" not "Page". Hence its recursively trying to flatten Pages however its not getting the Kids attribute. Also as it does not have "Page" object hence flattenPages length is not appended.

Now the PDF Version is 1.0(Acrobat 1.x). If I save the same PDF with different name then its version its getting change and its working.

[MartinThoma]

I realize it's been a long time, but ... Do you happen to have the PDF that causes / caused those issues? Could you share it?

[MartinThoma]

As too much has changed since this was last encountered and there is no example PDF, I'll close this.

If anybody sees this issue again with a recent PyPDF2 version, please let me know!

[Ontheroad123]

As too much has changed since this was last encountered and there is no example PDF, I'll close this.

If anybody sees this issue again with a recent PyPDF2 version, please let me know!

I have meet 'KeyError: '/Kids'' error, PyPDF2=='3.0.1',
Taylor’s Differential Diagnosis Manual_ Symptoms and Signs in the Time-Limited Encounter.pdf

[pubpub-zz]

The PDF is not compliant with the Standard : /Type field is missing on the Pages Nodes and on the Page Objects. However the document can be opened by Acrobat Reader. Page objects are now considered also if /Contents is present (although not or if /Kids is not present

[MartinThoma]

I've just merged the fix by @pubpub-zz (thank you again 🤗 )

The fix will be part of pypdf > 3.8.1.

[pachhaipurna]

@MartinThoma I am having this /Kids Type error in my pdf file, I tried to create a new pdf file based on Page number after updating some attributes, If I create individually it is working fine. But When I tried to combine multiple page at once, the Attributes are not updating.

[pubpub-zz]

@pachhaipurna
Please create a new issue with all data (version, code +pdf, error reported )
Like this we can not analyse the issue