[Bug]: ModuleNotFoundError: No module named 'img2pdf'

[wsshin]

What were you trying to do?

I just I installed OCRmyPDF through MacPorts; I indicated Homebrew as a installation platform below because MacPorts is not an option, and I get ModuleNotFoundError: No module named 'img2pdf'. See the traceback below.

To avoid any conflict between MacPorts-installed packages, I uninstalled all the packages by sudo port -fp uninstall installed and then reinstalled ocrmypdf by sudo port install ocrmypdf.

The questionnaire below asks if the Python version is compatible with OCRmyPDF. I didn't install any Python explicitly, but I assume it is installed through MacPorts as a dependency.

How can I resolve this issue? I will appreciate any help!

Where are you installing/running from?

Homebrew

OCRmyPDF version

N/A

What operating system are you working on?

macOS

Operating system details and version

Sonoma 14.7.3

Simple sanity checks

• Operating system is currently supported by its vendor (not end of life)
• Python version is compatible with OCRmyPDF
• This issue is not about a specific input file

Relevant log output

$ ocrmypdf
Traceback (most recent call last):
  File "/opt/local/bin/ocrmypdf", line 5, in <module>
    from ocrmypdf.__main__ import run
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/ocrmypdf/__init__.py", line 10, in <module>
    from ocrmypdf import helpers, hocrtransform, pdfa, pdfinfo
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages/ocrmypdf/helpers.py", line 26, in <module>
    import img2pdf
ModuleNotFoundError: No module named 'img2pdf'

[PratikWayase]

Hey wsshin, I’d like to work on this. Can you assign it to me?

[jbarlow83]

This is almost certainly a macports issue, so I am going to close it. If macports identifies an issue that we need to address, then open a new issue with details.

[wsshin]

I was able to resolve the issue. Looking at a bunch of installation messages generated during sudo port install ocrmypdf, I noticed that the ones related to img2pdf:

--->  Fetching archive for img2pdf
--->  Attempting to fetch img2pdf-0.5.1_0+python312.darwin_any.noarch.tbz2 from https://packages.macports.org/img2pdf
--->  Attempting to fetch img2pdf-0.5.1_0+python312.darwin_any.noarch.tbz2.rmd160 from https://packages.macports.org/img2pdf
--->  Installing img2pdf @0.5.1_0+python312
--->  Activating img2pdf @0.5.1_0+python312
--->  Cleaning img2pdf

This seemed to indicate that the img2pdf module was installed for Python 3.12. In contrast, the error message generated while executing ocrmypdf that I reported above indicated that it was trying to find img2pdf for Python 3.13.

Then I googled "macports img2pdf python313" and arrived this webpage, which indicates that there are several variants of img2pdf. I guessed that img2pdf @0.5.1_0+python312 in the MacPorts installation message meant that it was installing the python312 variant. So, following the instructions here, I installed the python313 variant by

$ sudo port install img2pdf +python313

This solved the issue, and now I ocrmypdf works fine!

Hope this helps people experiencing the same issue. I just filed a MacPorts ticket: https://trac.macports.org/ticket/72013.