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[pre-commit.ci] auto fixes from pre-commit.com hooks
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@ -106,65 +106,65 @@ class TestImage:
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assert p.pretty_output == "<PIL.Image.Image image mode=L size=100x100>"
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def test_repr_mimebundle(self):
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im = Image.new('L', (100, 100))
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im = Image.new("L", (100, 100))
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# blank image should be most efficiently encoded as PNG
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bundle = im._repr_mimebundle_()
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with Image.open(io.BytesIO(bundle['image/png'])) as im2:
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assert im2.format == 'PNG'
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with Image.open(io.BytesIO(bundle["image/png"])) as im2:
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assert im2.format == "PNG"
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assert_image_equal(im, im2)
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# include pointless restriction
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bundle = im._repr_mimebundle_(exclude=['test/plain'])
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with Image.open(io.BytesIO(bundle['image/png'])) as im2:
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assert im2.format == 'PNG'
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bundle = im._repr_mimebundle_(exclude=["test/plain"])
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with Image.open(io.BytesIO(bundle["image/png"])) as im2:
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assert im2.format == "PNG"
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assert_image_equal(im, im2)
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bundle = im._repr_mimebundle_(include=['image/png'])
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with Image.open(io.BytesIO(bundle['image/png'])) as im2:
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assert im2.format == 'PNG'
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bundle = im._repr_mimebundle_(include=["image/png"])
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with Image.open(io.BytesIO(bundle["image/png"])) as im2:
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assert im2.format == "PNG"
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assert_image_equal(im, im2)
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# force jpeg to be selected
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bundle = im._repr_mimebundle_(include=['image/jpeg'])
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with Image.open(io.BytesIO(bundle['image/jpeg'])) as im2:
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assert im2.format == 'JPEG'
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bundle = im._repr_mimebundle_(include=["image/jpeg"])
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with Image.open(io.BytesIO(bundle["image/jpeg"])) as im2:
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assert im2.format == "JPEG"
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assert_image_equal(im, im2, 17)
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# force jpeg to be selected in a different way
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bundle = im._repr_mimebundle_(exclude=['image/png'])
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with Image.open(io.BytesIO(bundle['image/jpeg'])) as im2:
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assert im2.format == 'JPEG'
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bundle = im._repr_mimebundle_(exclude=["image/png"])
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with Image.open(io.BytesIO(bundle["image/jpeg"])) as im2:
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assert im2.format == "JPEG"
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assert_image_equal(im, im2, 17)
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# make sure higher bit depths get converted down to 8BPC with warnings
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high = Image.new('I;16', (100, 100))
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high = Image.new("I;16", (100, 100))
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with pytest.warns(UserWarning):
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bundle = high._repr_mimebundle_()
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with Image.open(io.BytesIO(bundle['image/png'])) as im2:
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assert im2.format == 'PNG'
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with Image.open(io.BytesIO(bundle["image/png"])) as im2:
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assert im2.format == "PNG"
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assert_image_equal(im, im2)
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high = Image.new('F', (100, 100))
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high = Image.new("F", (100, 100))
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with pytest.warns(UserWarning):
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bundle = high._repr_mimebundle_()
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with Image.open(io.BytesIO(bundle['image/png'])) as im2:
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assert im2.format == 'PNG'
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with Image.open(io.BytesIO(bundle["image/png"])) as im2:
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assert im2.format == "PNG"
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assert_image_equal(im, im2)
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high = Image.new('I', (100, 100))
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high = Image.new("I", (100, 100))
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with pytest.warns(UserWarning):
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bundle = high._repr_mimebundle_()
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with Image.open(io.BytesIO(bundle['image/png'])) as im2:
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assert im2.format == 'PNG'
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with Image.open(io.BytesIO(bundle["image/png"])) as im2:
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assert im2.format == "PNG"
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assert_image_equal(im, im2)
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# make sure large image gets scaled down with a warning
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im = Image.new('L', [3000, 3000])
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im = Image.new("L", [3000, 3000])
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with pytest.warns(UserWarning):
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bundle = im._repr_mimebundle_()
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with Image.open(io.BytesIO(bundle['image/png'])) as im2:
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with Image.open(io.BytesIO(bundle["image/png"])) as im2:
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assert im2.size == (1500, 1500)
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assert_image_equal(im.resize(im2.size), im2)
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@ -462,38 +462,43 @@ def _getscaleoffset(expr):
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_IPYTHON_MODE_MAP = {
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'La': 'LA',
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'LAB': 'RGB',
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'HSV': 'RGB',
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'RGBX': 'RGB',
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'RGBa': 'RGBA',
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"La": "LA",
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"LAB": "RGB",
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"HSV": "RGB",
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"RGBX": "RGB",
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"RGBa": "RGBA",
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}
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_VALID_MODES_FOR_FORMAT = {
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'JPEG': {'L', 'RGB', 'YCbCr', 'CMYK'},
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'PNG': {'1', 'P', 'L', 'RGB', 'RGBA', 'LA', 'PA'},
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"JPEG": {"L", "RGB", "YCbCr", "CMYK"},
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"PNG": {"1", "P", "L", "RGB", "RGBA", "LA", "PA"},
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}
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def _to_ipython_image(image):
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"""Simplify image to something suitable for display in IPython/Jupyter.
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Notably, convert to 8BPC and rescale by some integer factor.
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"""
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if image.mode in {'I', 'F'}:
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warnings.warn("image mode doesn't have well defined min/max value, using extrema")
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if image.mode in {"I", "F"}:
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warnings.warn(
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"image mode doesn't have well defined min/max value, using extrema"
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)
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# linearly transform extrema to fit in [0, 255]
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# this should have a similar result as Image.histogram
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lo, hi = image.getextrema()
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scale = 256 / (hi - lo) if lo != hi else 1
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image = image.point(lambda e: (e - lo) * scale).convert('L')
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elif image.mode == 'I;16':
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image = image.point(lambda e: (e - lo) * scale).convert("L")
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elif image.mode == "I;16":
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warnings.warn("converting 16BPC image to 8BPC for display in IPython/Jupyter")
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# linearly transform max down to 255
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image = image.point(lambda e: e / 256).convert('L')
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image = image.point(lambda e: e / 256).convert("L")
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# shrink large images so they don't take too long to transfer/render
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factor = max(image.size) // IPYTHON_RESIZE_THRESHOLD
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if factor > 1:
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warnings.warn("scaling large image down to improve performance in IPython/Jupyter")
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warnings.warn(
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"scaling large image down to improve performance in IPython/Jupyter"
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)
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image = image.reduce(factor)
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# process remaining modes into things supported by writers
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@ -502,6 +507,7 @@ def _to_ipython_image(image):
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return image
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def _encode_ipython_image(image, image_format):
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"""Encode specfied image into something IPython/Jupyter supports.
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@ -706,8 +712,8 @@ class Image:
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return None
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return _encode_ipython_image(image, image_format)
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jpeg = encode('image/jpeg', 'JPEG')
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png = encode('image/png', 'PNG')
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jpeg = encode("image/jpeg", "JPEG")
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png = encode("image/png", "PNG")
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# prefer lossless format if it's not significantly larger
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if jpeg and png:
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@ -718,8 +724,8 @@ class Image:
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png = None
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return {
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'image/jpeg': jpeg,
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'image/png': png,
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"image/jpeg": jpeg,
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"image/png": png,
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}
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def _repr_png_(self):
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@ -727,14 +733,14 @@ class Image:
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:returns: PNG version of the image as bytes
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"""
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return _encode_ipython_image(_to_ipython_image(self), 'PNG')
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return _encode_ipython_image(_to_ipython_image(self), "PNG")
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def _repr_jpeg_(self):
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"""iPython display hook support for JPEG format.
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:returns: JPEG version of the image as bytes
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"""
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return _encode_ipython_image(_to_ipython_image(self), 'JPEG')
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return _encode_ipython_image(_to_ipython_image(self), "JPEG")
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@property
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def __array_interface__(self):
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