Pages without Resources dictionary

[jvalenzuela]

Failure using mergePage() with pages that do not have a resource dictionary. This appears to be a valid condition, and the page should then inherit dictionary content from its parent. Trackback below:

Traceback (most recent call last):
  File "C:\Python27\lib\lib-tk\Tkinter.py", line 1536, in __call__
    return self.func(*args)
  File "pdfbind\view.py", line 153, in _on_execute_click
    b.bind()
  File "pdfbind\bind.py", line 176, in bind
    page_bufs.append(page_header.merge(p, header_info))
  File "pdfbind\header.py", line 68, in merge
    header_page.mergePage(orig_page)
  File "PyPDF2\pdf.py", line 2211, in mergePage
    self._mergePage(page2)
  File "PyPDF2\pdf.py", line 2221, in _mergePage
    page2Resources = page2["/Resources"].getObject()
  File "PyPDF2\generic.py", line 512, in __getitem__
    return dict.__getitem__(self, key).getObject()
KeyError: '/Resources'

[mstamy2]

Could you possibly share the PDF(s) you're working with so I can take a closer look? PyPDF2 does (or is supposed to) support inheritance of missing page attributes from a parent.

[jvalenzuela]

Here's one of the files causing the problem. Starting with some other page from another document, then calling mergePage() with this PDF results in the above error.
108.pdf

[mstamy2]

While PyPDF2 does allow inheriting certain page attributes, It appears that the none of the page's parents contain the Resources dictionary either. It is a required entry, however I'll try to implement a workaround in strict=False mode

[sjacob90]

Was this issue resolved?

[pubpub-zz]

Here's one of the files causing the problem. Starting with some other page from another document, then calling mergePage() with this PDF results in the above error. 108.pdf
tested successfully :

p = PyPDF2.PdfReader("c:/108.pdf")
m = PyPDF2.PdfMerger()
m.append(p)
with open("c:/tt.pdf","wb") as f:
    m.write(f)

issue can be closed

[MartinThoma]

Thank you for checking @pubpub-zz ❤️

[FredrikWallstrom]

Maybe I'm missing something but it looks like this: #1276 only fixes the _extract_text function.
I'm still having issues with the _merge_page function and this call: original_resources = cast(DictionaryObject, self[PG.RESOURCES].get_object()) when I have a page that is missing the \Resources dict.

  File "/site-packages/PyPDF2/_page.py", line 508, in merge_page
    self._merge_page(page2, expand=expand)
  File "/site-packages/PyPDF2/_page.py", line 532, in _merge_page
    original_resources = cast(DictionaryObject, self[PG.RESOURCES].get_object())
  File "/site-packages/PyPDF2/generic/_data_structures.py", line 149, in __getitem__
    return dict.__getitem__(self, key).get_object()
KeyError: '/Resources'

[MartinThoma]

@FredrikWallstrom Which version of PyPDF2 are you using?

[FredrikWallstrom]

Which version of PyPDF2 are you using?

2.10.8

[pubpub-zz]

@FredrikWallstrom
to be sure to focus on the real problem, can you provide test file and code

thanks

[FredrikWallstrom]

PDF: 108.pdf

Stupid code example but the principle is the same:

    reader = PdfReader(<108.pdf-stream>)
    page_one = reader.pages[0]
    page_two = reader.pages[0]
    page_one.merge_page(page_two)

[pubpub-zz]

a good example improves analysis.Thanks

Should be good now