Running dvr-scan on MacOs: OpenCV not found? /u/wild_b_cat Python Education

This may be a very noobish question but I did my best to research it and I’m stuck. I have not used a lot of Python in my life.

I’m on MacOs Ventura (14.6) and I’m trying to run dvr-scan. When I invoke dvr-scan it fails with:

File “/Users/patrickmcclanahan/Library/Application Support/pipx/venvs/dvr-scan/lib/python3.12/site-packages/dvr_scan/opencv_loader.py”, line 34, in <module>

raise ModuleNotFoundError(

ModuleNotFoundError: OpenCV could not be found, try installing opencv-python:

However, running that install command says that cv is installed already. So I went into the specific file being run (opencv_loader.py). It has these commands:

import importlib

import importlib.util

import os

[snip]

# OpenCV is a required package, but we don’t have it as an explicit dependency since we

# need to support both opencv-python and opencv-python-headless. Include some additional

# context with the exception if this is the case.

if not importlib.util.find_spec(“cv2”):

raise ModuleNotFoundError(

“OpenCV could not be found, try installing opencv-python:nnpip install opencv-python”,

name=”cv2″,

)

So that looks like the part that’s failing. But when I do this from the command line:

python3

: import importlib
: import importlib.util

: importlib.util.find_spec(“cv2”)

.. it runs correctly!

>>> importlib.util.find_spec(“cv2”)

ModuleSpec(name=’cv2′, loader=<_frozen_importlib_external.SourceFileLoader object at 0x104ec51c0>, origin=’/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/site-packages/cv2/__init__.py’, submodule_search_locations=[‘/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/site-packages/cv2’])

So it looks, to my untrained eyes, like importlib.util is working when I invoke it directly in python3 via the command line but failing when called indirectly via dvr-scan during its startup. Is there something that could cause this? Environment variable differences?

This may be a very noobish question but I did my best to research it and I’m stuck. I have not used a lot of Python in my life.

I’m on MacOs Ventura (14.6) and I’m trying to run dvr-scan. When I invoke dvr-scan it fails with:

File “/Users/patrickmcclanahan/Library/Application Support/pipx/venvs/dvr-scan/lib/python3.12/site-packages/dvr_scan/opencv_loader.py”, line 34, in <module>

raise ModuleNotFoundError(

ModuleNotFoundError: OpenCV could not be found, try installing opencv-python:

However, running that install command says that cv is installed already. So I went into the specific file being run (opencv_loader.py). It has these commands:

import importlib

import importlib.util

import os

[snip]

# OpenCV is a required package, but we don’t have it as an explicit dependency since we

# need to support both opencv-python and opencv-python-headless. Include some additional

# context with the exception if this is the case.

if not importlib.util.find_spec(“cv2”):

raise ModuleNotFoundError(

“OpenCV could not be found, try installing opencv-python:nnpip install opencv-python”,

name=”cv2″,

)

So that looks like the part that’s failing. But when I do this from the command line:

python3

: import importlib
: import importlib.util

: importlib.util.find_spec(“cv2”)

.. it runs correctly!

>>> importlib.util.find_spec(“cv2”)

ModuleSpec(name=’cv2′, loader=<_frozen_importlib_external.SourceFileLoader object at 0x104ec51c0>, origin=’/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/site-packages/cv2/__init__.py’, submodule_search_locations=[‘/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/site-packages/cv2’])

So it looks, to my untrained eyes, like importlib.util is working when I invoke it directly in python3 via the command line but failing when called indirectly via dvr-scan during its startup. Is there something that could cause this? Environment variable differences?