Two Catalog objects after cloning #1923
Description
Environment
Which environment were you using when you encountered the problem?
$ python -m platform
Linux-5.19.0-45-generic-x86_64-with-glibc2.35
$ python -c "import pypdf;print(pypdf.__version__)"
3.11.1Code + PDF
Create a PdfReader and PdfWriter
from pypdf import PdfReader, PdfWriter
reader = PdfReader("ial_inscriptible.pdf")
writer = PdfWriter()
print(writer._objects )An empty writer already has objects
[{'/Type': '/Pages', '/Count': 0, '/Kids': []}, {'/Producer': 'pypdf'}, {'/Type': '/Catalog', '/Pages': IndirectObject(1, 0, 139758986133584)}]
Clone the pdf
writer.clone_document_from_reader(reader)
import pprint
pprint.pprint([obj for obj in writer._objects if isinstance(obj, dict) and obj.get('/Type') == '/Catalog'])We have two objects of type Catalog :|
[{'/Pages': IndirectObject(1, 0, 139758986133584), '/Type': '/Catalog'},
{'/AcroForm': IndirectObject(5, 0, 139758986133584),
'/Lang': 'fr-FR',
'/MarkInfo': {'/Marked': True},
'/Metadata': IndirectObject(817, 0, 139758986133584),
'/PageLabels': IndirectObject(818, 0, 139758986133584),
'/Pages': IndirectObject(194, 0, 139758986133584),
'/StructTreeRoot': IndirectObject(819, 0, 139758986133584),
'/Type': '/Catalog',
'/ViewerPreferences': IndirectObject(1484, 0, 139758986133584)}]
Pdf use https://www.georisques.gouv.fr/sites/default/files/ial/ial_inscriptible.pdf
Fast fix
from pypdf import PdfReader, PdfWriter
reader = PdfReader("ial_inscriptible.pdf")
writer = PdfWriter()
writer._objects = []
print(writer._objects )
writer.clone_document_from_reader(reader)