[Solved] No module named ‘PyPDF2._codecs’, even after already installed

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This issue was only present in the PyPI distribution of PyPDF2==2.3.0 for a couple of hours. It was fixed with release 2.3.1. See #1011 for more details

I’m the maintainer of PyPDF2. I’m sorry I caused some headaches.

You can update PyPDF2 via:

pip install PyPDF2 --upgrade

solved No module named ‘PyPDF2._codecs’, even after already installed