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Use Python logging framework #1208
Description
At the moment, all output from opencv-python C++ components seems to be emitted directly like this:
[ WARN:0@10009,161] global qrcode.cpp:2913 decodingProcess QR: ECI is not supported properly
This does not align nicely with the regular Python logging. It would be great to let opencv-python use the proper logging capabilities of the current environment instead.
Activity
jadhavroshani713-sys commentedon Feb 17, 2026
Thanks for explaining this. I’m new to OpenCV-Python and noticed these warning messages too. Is there currently any recommended way to redirect them into Python’s logging framework?
Sedhubabu commentedon Feb 19, 2026
Currently, OpenCV’s C++ backend prints warning messages directly to the console instead of using Python’s logging system.
Because of that, the logs do not follow our application's logging format and cannot be controlled using our logging configuration.
To make logging consistent and manageable, we can set the OpenCV log level (for example, to ERROR or SILENT) using environment variables or
cv2.utils.logging.setLogLevel().