How to suppressing warnings?

[ahemberger]

This is, I'm sure, an incredibly dumb question, but: I'd like to tidy up the output of some tools I'm building that use colour-science, and would like to suppress some of the warnings that it throws. I'm reading this doc, and am doing this in my code:

colour.utilities.suppress_warnings( True, True, True, True );

(I also tried:)

colour.utilities.suppress_warnings( colour_runtime_warnings = True,
							 colour_usage_warnings = True,
							 colour_warnings = True,
							 python_warnings = True );

but still get warnings when reading EXR images:

...pyenv/lib/python3.9/site-packages/colour/utilities/verbose.py:237: ColourUsageWarning: "OpenImageIO" related API features are not available, switching to "Imageio"!
  warn(*args, **kwargs)

Is there a way I can disable the above (or: what silly mistake am I making here?)

Thanks!
-a

[KelSolaar]

Hi @ahemberger,

What you are doing should work I think, here is what I would be expecting:

>>> import colour
>>> colour.utilities.filter_warnings(*[True] * 4)
>>> colour.utilities.runtime_warning('Hey!')
True
>>> colour.utilities.filter_warnings(*['default'] * 4)
>>> colour.utilities.runtime_warning('Hey!')
/Users/kelsolaar/Documents/Development/colour-science/colour/colour/utilities/verbose.py:235: ColourRuntimeWarning: Hey!
  warn(*args, **kwargs)
True
>>> colour.utilities.filter_warnings(*[True] * 4)
>>> colour.read_image('/Users/kelsolaar/Downloads/Colour_Normal_Observers_sRGB_Primaries_Red_Extreme.exr')
array([[[  1.00000000e+00,   6.24389648e-02,  -5.97381592e-03],
        [  1.00000000e+00,   1.05023384e-04,   2.44975090e-05],
        [  1.00000000e+00,  -3.82080078e-02,  -8.62121582e-03]]], dtype=float32)
>>> colour.utilities.filter_warnings(*['default'] * 4)
>>> colour.read_image('/Users/kelsolaar/Downloads/Colour_Normal_Observers_sRGB_Primaries_Red_Extreme.exr')
/Users/kelsolaar/Documents/Development/colour-science/colour/colour/utilities/verbose.py:235: ColourUsageWarning: "OpenImageIO" related API features are not available, switching to "Imageio"!
  warn(*args, **kwargs)
array([[[  1.00000000e+00,   6.24389648e-02,  -5.97381592e-03],
        [  1.00000000e+00,   1.05023384e-04,   2.44975090e-05],
        [  1.00000000e+00,  -3.82080078e-02,  -8.62121582e-03]]], dtype=float32)

[ahemberger]

Amazing, thank you so much sir! This worked great!

For what it's worth, I was using suppress_warnings (as opposed to filter_warnings); switching to the latter as you suggest totally straightened me out.

Thank you again!

[KelSolaar]

Oh yeah, sorry, I misread, colour.utilities.suppress_warnings is a context manager so it works like that:

>>> with suppress_warnings(*[True] * 4):
>>> ... colour.read_image('/Users/kelsolaar/Downloads/Colour_Normal_Observers_sRGB_Primaries_Red_Extreme.exr')
array([[[  1.00000000e+00,   6.24389648e-02,  -5.97381592e-03],
        [  1.00000000e+00,   1.05023384e-04,   2.44975090e-05],
        [  1.00000000e+00,  -3.82080078e-02,  -8.62121582e-03]]], dtype=float32)