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Fix many formatting mistakes in PIL.Image's docstrings
This commit is contained in:
Stephen Johnson
parent
b25e8c5d18
commit
b533aa665e
240
PIL/Image.py
240
PIL/Image.py
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@ -281,10 +281,10 @@ def getmodetype(mode):
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def getmodebandnames(mode):
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"""
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Gets a list of individual band names. Given a mode, this function
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returns a tuple containing the names of individual bands (use
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:func:`PIL.Image.getmodetype` to get the mode used to store each individual
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band.
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Gets a list of individual band names. Given a mode, this function returns
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a tuple containing the names of individual bands (use
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:py:method:`~PIL.Image.getmodetype` to get the mode used to store each
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individual band.
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:param mode: Input mode.
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:returns: A tuple containing band names. The length of the tuple
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@ -443,13 +443,14 @@ def _getscaleoffset(expr):
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class Image:
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"""
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This class represents an image object. To create Image objects, use
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the appropriate factory functions. There's hardly ever any reason
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to call the Image constructor directly.
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This class represents an image object. To create
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:py:class:`~PIL.Image.Image` objects, use the appropriate factory
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functions. There's hardly ever any reason to call the Image constructor
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directly.
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* :func:`PIL.Image.open`
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* :func:`PIL.Image.new`
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* :func:`PIL.Image.frombytes`
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* :py:func:`~PIL.Image.open`
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* :py:func:`~PIL.Image.new`
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* :py:func:`~PIL.Image.frombytes`
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"""
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format = None
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format_description = None
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@ -588,8 +589,8 @@ class Image:
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"""
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Loads this image with pixel data from a bytes object.
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This method is similar to the :func:`PIL.Image.frombytes` function, but
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loads data into this image instead of creating a new image object.
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This method is similar to the :py:func:`~PIL.Image.frombytes` function,
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but loads data into this image instead of creating a new image object.
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"""
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# may pass tuple instead of argument list
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@ -611,7 +612,10 @@ class Image:
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raise ValueError("cannot decode image data")
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def fromstring(self, *args, **kw):
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""" Deprecated alias to frombytes """
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"""Deprecated alias to frombytes.
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.. deprecated:: 2.0
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"""
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warnings.warn('fromstring() is deprecated. Please call frombytes() instead.', DeprecationWarning)
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return self.frombytes(*args, **kw)
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@ -651,7 +655,7 @@ class Image:
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"""
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pass
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def convert(self, mode=None, data=None, dither=None,
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def convert(self, mode=None, matrix=None, dither=None,
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palette=WEB, colors=256):
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"""
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Returns a converted copy of this image. For the "P" mode, this
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@ -660,16 +664,17 @@ class Image:
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and the palette can be represented without a palette.
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The current version supports all possible conversions between
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"L", "RGB" and "CMYK."
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"L", "RGB" and "CMYK." The **matrix** argument only supports "L"
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and "RGB".
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When translating a colour image to black and white (mode "L"),
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the library uses the ITU-R 601-2 luma transform:
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When translating a color image to black and white (mode "L"),
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the library uses the ITU-R 601-2 luma transform::
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L = R * 299/1000 + G * 587/1000 + B * 114/1000
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When translating a greyscale image into a bilevel image (mode
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"1"), all non-zero values are set to 255 (white). To use other
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thresholds, use the :func:`PIL.Image.Image.point` method.
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thresholds, use the :py:meth:`~PIL.Image.Image.point` method.
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:param mode: The requested mode.
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:param matrix: An optional conversion matrix. If given, this
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@ -681,8 +686,8 @@ class Image:
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to "P". Available palettes are WEB or ADAPTIVE.
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:param colors: Number of colors to use for the ADAPTIVE palette.
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Defaults to 256.
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:rtype: :class:`PIL.Image.Image`
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:returns: An Image object.
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:rtype: :py:class:`~PIL.Image.Image`
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:returns: An :py:class:`~PIL.Image.Image` object.
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"""
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if not mode:
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@ -698,18 +703,18 @@ class Image:
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self.load()
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if data:
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if matrix:
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# matrix conversion
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if mode not in ("L", "RGB"):
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raise ValueError("illegal conversion")
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im = self.im.convert_matrix(mode, data)
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im = self.im.convert_matrix(mode, matrix)
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return self._new(im)
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if mode == "P" and palette == ADAPTIVE:
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im = self.im.quantize(colors)
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return self._new(im)
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# colourspace conversion
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# colorspace conversion
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if dither is None:
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dither = FLOYDSTEINBERG
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@ -767,8 +772,8 @@ class Image:
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Copies this image. Use this method if you wish to paste things
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into an image, but still retain the original.
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:rtype: :class:`PIL.Image.Image`
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:returns: An Image object.
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:rtype: :py:class:`~PIL.Image.Image`
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:returns: An :py:class:`~PIL.Image.Image` object.
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"""
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self.load()
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im = self.im.copy()
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@ -782,12 +787,12 @@ class Image:
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This is a lazy operation. Changes to the source image may or
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may not be reflected in the cropped image. To break the
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connection, call the {@link #Image.load} method on the cropped
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copy.
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connection, call the :py:meth:`~PIL.Image.Image.load` method on
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the cropped copy.
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:param box: The crop rectangle, as a (left, upper, right, lower)-tuple.
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:rtype: :class:`PIL.Image.Image`
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:returns: An Image object.
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:rtype: :py:class:`~PIL.Image.Image`
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:returns: An :py:class:`~PIL.Image.Image` object.
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"""
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self.load()
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@ -801,12 +806,13 @@ class Image:
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"""
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Configures the image file loader so it returns a version of the
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image that as closely as possible matches the given mode and
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size. For example, you can use this method to convert a colour
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size. For example, you can use this method to convert a color
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JPEG to greyscale while loading it, or to extract a 128x192
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version from a PCD file.
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Note that this method modifies the Image object in place. If
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the image has already been loaded, this method has no effect.
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Note that this method modifies the :py:class:`~PIL.Image.Image` object
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in place. If the image has already been loaded, this method has no
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effect.
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:param mode: The requested mode.
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:param size: The requested size.
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@ -822,11 +828,10 @@ class Image:
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def filter(self, filter):
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"""
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Filters this image using the given filter. For a list of
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available filters, see the :mod:`PIL.ImageFilter` module.
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available filters, see the :py:mod:`~PIL.ImageFilter` module.
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:param filter: Filter kernel.
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:returns: An Image object.
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"""
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:returns: An :py:class:`~PIL.Image.Image` object. """
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self.load()
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@ -1014,18 +1019,18 @@ class Image:
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def offset(self, xoffset, yoffset=None):
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"""
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(Deprecated) Returns a copy of the image where the data has been
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offset by the given distances. Data wraps around the edges. If
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yoffset is omitted, it is assumed to be equal to xoffset.
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.. deprecated:: 2.0
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This method is deprecated. New code should use the
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:func:`PIL.ImageChops.offset` function in the
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:mod:`PIL.ImageChops` module.
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.. note:: New code should use :py:func:`PIL.ImageChops.offset`.
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Returns a copy of the image where the data has been offset by the given
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distances. Data wraps around the edges. If **yoffset** is omitted, it
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is assumed to be equal to **xoffset**.
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:param xoffset: The horizontal distance.
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:param yoffset: The vertical distance. If omitted, both
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distances are set to the same value.
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:returns: An Image object.
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:returns: An :py:class:`~PIL.Image.Image` object.
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"""
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if warnings:
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warnings.warn(
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@ -1043,14 +1048,14 @@ class Image:
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(0, 0)). If a 4-tuple is given, the size of the pasted image
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must match the size of the region.
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If the modes don't match, the pasted image is converted to the
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mode of this image (see the :func:`PIL.Image.Image.convert` method for
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If the modes don't match, the pasted image is converted to the mode of
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this image (see the :py:meth:`~PIL.Image.Image.convert` method for
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details).
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Instead of an image, the source can be a integer or tuple
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containing pixel values. The method then fills the region
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with the given colour. When creating RGB images, you can
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also use colour strings as supported by the ImageColor module.
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with the given color. When creating RGB images, you can
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also use color strings as supported by the ImageColor module.
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If a mask is given, this method updates only the regions
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indicated by the mask. You can use either "1", "L" or "RGBA"
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@ -1073,7 +1078,7 @@ class Image:
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third, the box defaults to (0, 0), and the second argument
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is interpreted as a mask image.
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:param mask: An optional mask image.
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:returns: An Image object.
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:returns: An :py:class:`~PIL.Image.Image` object.
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"""
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if isImageType(box) and mask is None:
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@ -1131,7 +1136,7 @@ class Image:
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:param mode: Output mode (default is same as input). In the
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current version, this can only be used if the source image
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has mode "L" or "P", and the output has mode "1".
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:returns: An Image object.
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:returns: An :py:class:`~PIL.Image.Image` object.
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"""
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self.load()
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@ -1260,19 +1265,19 @@ class Image:
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def putpixel(self, xy, value):
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"""
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Modifies the pixel at the given position. The colour is given as
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Modifies the pixel at the given position. The color is given as
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a single numerical value for single-band images, and a tuple for
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multi-band images.
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Note that this method is relatively slow. For more extensive
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changes, use :func:`PIL.Image.Image.paste` or the :mod:`PIL.ImageDraw`
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Note that this method is relatively slow. For more extensive changes,
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use :py:meth:`~PIL.Image.Image.paste` or the :py:mod:`~PIL.ImageDraw`
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module instead.
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See:
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* :func:`PIL.Image.Image.paste`
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* :func:`PIL.Image.Image.putdata`
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* :mod:`PIL.ImageDraw`
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* :py:meth:`~PIL.Image.Image.paste`
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* :py:meth:`~PIL.Image.Image.putdata`
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* :py:mod:`~PIL.ImageDraw`
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:param xy: The pixel coordinate, given as (x, y).
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:param value: The pixel value.
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@ -1291,14 +1296,14 @@ class Image:
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:param size: The requested size in pixels, as a 2-tuple:
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(width, height).
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:param filter: An optional resampling filter. This can be
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one of :attr:`PIL.Image.NEAREST` (use nearest neighbour),
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:attr:`PIL.Image.BILINEAR` (linear interpolation in a 2x2
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environment), :attr:`PIL.Image.BICUBIC` (cubic spline
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one of :py:attr:`PIL.Image.NEAREST` (use nearest neighbour),
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:py:attr:`PIL.Image.BILINEAR` (linear interpolation in a 2x2
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environment), :py:attr:`PIL.Image.BICUBIC` (cubic spline
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interpolation in a 4x4 environment), or
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:attr:`PIL.Image.ANTIALIAS` (a high-quality downsampling filter).
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:py:attr:`PIL.Image.ANTIALIAS` (a high-quality downsampling filter).
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If omitted, or if the image has mode "1" or "P", it is
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set :attr:`PIL.Image.NEAREST`.
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:returns: An Image object.
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set :py:attr:`PIL.Image.NEAREST`.
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:returns: An :py:class:`~PIL.Image.Image` object.
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"""
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if resample not in (NEAREST, BILINEAR, BICUBIC, ANTIALIAS):
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@ -1331,17 +1336,17 @@ class Image:
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:param angle: In degrees counter clockwise.
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:param filter: An optional resampling filter. This can be
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one of :attr:`PIL.Image.NEAREST` (use nearest neighbour),
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:attr:`PIL.Image.BILINEAR` (linear interpolation in a 2x2
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environment), or :attr:`PIL.Image.BICUBIC`
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one of :py:attr:`PIL.Image.NEAREST` (use nearest neighbour),
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:py:attr:`PIL.Image.BILINEAR` (linear interpolation in a 2x2
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environment), or :py:attr:`PIL.Image.BICUBIC`
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(cubic spline interpolation in a 4x4 environment).
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If omitted, or if the image has mode "1" or "P", it is
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set :attr:`PIL.Image.NEAREST`.
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set :py:attr:`PIL.Image.NEAREST`.
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:param expand: Optional expansion flag. If true, expands the output
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image to make it large enough to hold the entire rotated image.
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If false or omitted, make the output image the same size as the
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input image.
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:returns: An Image object.
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:returns: An :py:class:`~PIL.Image.Image` object.
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"""
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if expand:
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@ -1469,7 +1474,7 @@ class Image:
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Note that in the current version of the library, most sequence
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formats only allows you to seek to the next frame.
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See :func:`PIL.Image.Image.tell`.
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See :py:meth:`~PIL.Image.Image.tell`.
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:param frame: Frame number, starting at 0.
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:exception EOFError: If the call attempts to seek beyond the end
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@ -1520,7 +1525,7 @@ class Image:
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def tell(self):
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"""
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Returns the current frame number. See :func:`PIL.Image.Image.seek`.
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Returns the current frame number. See :py:meth:`~PIL.Image.Image.seek`.
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:returns: Frame number, starting with 0.
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"""
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@ -1532,24 +1537,24 @@ class Image:
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image to contain a thumbnail version of itself, no larger than
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the given size. This method calculates an appropriate thumbnail
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size to preserve the aspect of the image, calls the
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:func:`PIL.Image.Image.draft` method to configure the file reader
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:py:meth:`~PIL.Image.Image.draft` method to configure the file reader
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(where applicable), and finally resizes the image.
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Note that the bilinear and bicubic filters in the current
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version of PIL are not well-suited for thumbnail generation.
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You should use :attr:`PIL.Image.ANTIALIAS` unless speed is much more
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You should use :py:attr:`PIL.Image.ANTIALIAS` unless speed is much more
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important than quality.
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Also note that this function modifies the Image object in place.
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If you need to use the full resolution image as well, apply this
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method to a :func:`PIL.Image.Image.copy` of the original image.
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Also note that this function modifies the :py:class:`~PIL.Image.Image`
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object in place. If you need to use the full resolution image as well, apply
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this method to a :py:meth:`~PIL.Image.Image.copy` of the original image.
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:param size: Requested size.
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:param resample: Optional resampling filter. This can be one
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of :attr:`PIL.Image.NEAREST`, :attr:`PIL.Image.BILINEAR`,
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:attr:`PIL.Image.BICUBIC`, or :attr:`PIL.Image.ANTIALIAS`
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of :py:attr:`PIL.Image.NEAREST`, :py:attr:`PIL.Image.BILINEAR`,
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:py:attr:`PIL.Image.BICUBIC`, or :py:attr:`PIL.Image.ANTIALIAS`
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(best quality). If omitted, it defaults to
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:attr:`PIL.Image.NEAREST` (this will be changed to ANTIALIAS in a
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:py:attr:`PIL.Image.NEAREST` (this will be changed to ANTIALIAS in a
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future version).
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:returns: None
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"""
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@ -1593,20 +1598,20 @@ class Image:
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:param size: The output size.
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:param method: The transformation method. This is one of
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:attr:`PIL.Image.EXTENT` (cut out a rectangular subregion),
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:attr:`PIL.Image.AFFINE` (affine transform),
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:attr:`PIL.Image.PERSPECTIVE` (perspective transform),
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:attr:`PIL.Image.QUAD` (map a quadrilateral to a rectangle), or
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:attr:`PIL.Image.MESH` (map a number of source quadrilaterals
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:py:attr:`PIL.Image.EXTENT` (cut out a rectangular subregion),
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:py:attr:`PIL.Image.AFFINE` (affine transform),
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:py:attr:`PIL.Image.PERSPECTIVE` (perspective transform),
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:py:attr:`PIL.Image.QUAD` (map a quadrilateral to a rectangle), or
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:py:attr:`PIL.Image.MESH` (map a number of source quadrilaterals
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in one operation).
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:param data: Extra data to the transformation method.
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:param resample: Optional resampling filter. It can be one of
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:attr:`PIL.Image.NEAREST` (use nearest neighbour),
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:attr:`PIL.Image.BILINEAR` (linear interpolation in a 2x2
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environment), or :attr:`PIL.Image.BICUBIC` (cubic spline
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:py:attr:`PIL.Image.NEAREST` (use nearest neighbour),
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:py:attr:`PIL.Image.BILINEAR` (linear interpolation in a 2x2
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environment), or :py:attr:`PIL.Image.BICUBIC` (cubic spline
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interpolation in a 4x4 environment). If omitted, or if the image
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has mode "1" or "P", it is set to :attr:`PIL.Image.NEAREST`.
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:returns: An Image object.
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has mode "1" or "P", it is set to :py:attr:`PIL.Image.NEAREST`.
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:returns: An :py:class:`~PIL.Image.Image` object.
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"""
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if self.mode == 'RGBA':
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@ -1682,9 +1687,9 @@ class Image:
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"""
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Transpose image (flip or rotate in 90 degree steps)
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:param method: One of :attr:`PIL.Image.FLIP_LEFT_RIGHT`,
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:attr:`PIL.Image.FLIP_TOP_BOTTOM`, :attr:`PIL.Image.ROTATE_90`,
|
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:attr:`PIL.Image.ROTATE_180`, or :attr:`PIL.Image.ROTATE_270`.
|
||||
:param method: One of :py:attr:`PIL.Image.FLIP_LEFT_RIGHT`,
|
||||
:py:attr:`PIL.Image.FLIP_TOP_BOTTOM`, :py:attr:`PIL.Image.ROTATE_90`,
|
||||
:py:attr:`PIL.Image.ROTATE_180`, or :py:attr:`PIL.Image.ROTATE_270`.
|
||||
:returns: Returns a flipped or rotated copy of this image.
|
||||
"""
|
||||
|
||||
|
|
@ -1756,13 +1761,13 @@ def new(mode, size, color=0):
|
|||
|
||||
:param mode: The mode to use for the new image.
|
||||
:param size: A 2-tuple, containing (width, height) in pixels.
|
||||
:param color: What colour to use for the image. Default is black.
|
||||
:param color: What color to use for the image. Default is black.
|
||||
If given, this should be a single integer or floating point value
|
||||
for single-band modes, and a tuple for multi-band modes (one value
|
||||
per band). When creating RGB images, you can also use colour
|
||||
strings as supported by the ImageColor module. If the colour is
|
||||
per band). When creating RGB images, you can also use color
|
||||
strings as supported by the ImageColor module. If the color is
|
||||
None, the image is not initialised.
|
||||
:returns: An Image object.
|
||||
:returns: An :py:class:`~PIL.Image.Image` object.
|
||||
"""
|
||||
|
||||
if color is None:
|
||||
|
|
@ -1791,14 +1796,15 @@ def frombytes(mode, size, data, decoder_name="raw", *args):
|
|||
|
||||
Note that this function decodes pixel data only, not entire images.
|
||||
If you have an entire image in a string, wrap it in a
|
||||
**BytesIO** object, and use :func:`PIL.Image.open` to load it.
|
||||
:py:class:`~io.BytesIO` object, and use :py:func:`~PIL.Image.open` to load
|
||||
it.
|
||||
|
||||
:param mode: The image mode.
|
||||
:param size: The image size.
|
||||
:param data: A byte buffer containing raw data for the given mode.
|
||||
:param decoder_name: What decoder to use.
|
||||
:param args: Additional parameters for the given decoder.
|
||||
:returns: An Image object.
|
||||
:returns: An :py:class:`~PIL.Image.Image` object.
|
||||
"""
|
||||
|
||||
# may pass tuple instead of argument list
|
||||
|
|
@ -1813,7 +1819,10 @@ def frombytes(mode, size, data, decoder_name="raw", *args):
|
|||
return im
|
||||
|
||||
def fromstring(*args, **kw):
|
||||
" Deprecated alias to frombytes "
|
||||
"""Deprecated alias to frombytes.
|
||||
|
||||
.. deprecated:: 2.0
|
||||
"""
|
||||
warnings.warn(
|
||||
'fromstring() is deprecated. Please call frombytes() instead.',
|
||||
DeprecationWarning,
|
||||
|
|
@ -1826,21 +1835,20 @@ def frombuffer(mode, size, data, decoder_name="raw", *args):
|
|||
"""
|
||||
Creates an image memory referencing pixel data in a byte buffer.
|
||||
|
||||
This function is similar to :func:`PIL.Image.frombytes`, but uses data in
|
||||
the byte buffer, where possible. This means that changes to the
|
||||
original buffer object are reflected in this image). Not all modes
|
||||
can share memory; supported modes include "L", "RGBX", "RGBA", and
|
||||
"CMYK".
|
||||
This function is similar to :py:func:`~PIL.Image.frombytes`, but uses data
|
||||
in the byte buffer, where possible. This means that changes to the
|
||||
original buffer object are reflected in this image). Not all modes can
|
||||
share memory; supported modes include "L", "RGBX", "RGBA", and "CMYK".
|
||||
|
||||
Note that this function decodes pixel data only, not entire images.
|
||||
If you have an entire image file in a string, wrap it in a
|
||||
**BytesIO** object, and use :func:`PIL.Image.open` to load it.
|
||||
**BytesIO** object, and use :py:func:`~PIL.Image.open` to load it.
|
||||
|
||||
In the current version, the default parameters used for the "raw" decoder
|
||||
differs from that used for :func:`PIL.Image.fromstring`. This is a bug,
|
||||
and will probably be fixed in a future release. The current release issues
|
||||
a warning if you do this; to disable the warning, you should provide the
|
||||
full set of parameters. See below for details.
|
||||
differs from that used for :py:func:`~PIL.Image.fromstring`. This is a
|
||||
bug, and will probably be fixed in a future release. The current release
|
||||
issues a warning if you do this; to disable the warning, you should provide
|
||||
the full set of parameters. See below for details.
|
||||
|
||||
:param mode: The image mode.
|
||||
:param size: The image size.
|
||||
|
|
@ -1853,7 +1861,7 @@ def frombuffer(mode, size, data, decoder_name="raw", *args):
|
|||
|
||||
frombuffer(mode, size, data, "raw", mode, 0, 1)
|
||||
|
||||
:returns: An Image object.
|
||||
:returns: An :py:class:`~PIL.Image.Image` object.
|
||||
|
||||
.. versionadded:: 1.1.4
|
||||
"""
|
||||
|
|
@ -1890,7 +1898,7 @@ def fromarray(obj, mode=None):
|
|||
(using the buffer protocol).
|
||||
|
||||
If obj is not contiguous, then the tobytes method is called
|
||||
and :func:`PIL.Image.frombuffer` is used.
|
||||
and :py:func:`~PIL.Image.frombuffer` is used.
|
||||
|
||||
:param obj: Object with array interface
|
||||
:param mode: Mode to use (will be determined from type if None)
|
||||
|
|
@ -1961,14 +1969,14 @@ def open(fp, mode="r"):
|
|||
|
||||
This is a lazy operation; this function identifies the file, but the
|
||||
actual image data is not read from the file until you try to process
|
||||
the data (or call the :func:`PIL.Image.Image.load` method).
|
||||
See :func:`PIL.Image.new`
|
||||
the data (or call the :py:meth:`~PIL.Image.Image.load` method).
|
||||
See :py:func:`~PIL.Image.new`.
|
||||
|
||||
:param file: A filename (string) or a file object. The file object
|
||||
must implement **read**, **seek**, and **tell** methods,
|
||||
and be opened in binary mode.
|
||||
must implement :py:meth:`~file.read`, :py:meth:`~file.seek`, and
|
||||
:py:meth:`~file.tell` methods, and be opened in binary mode.
|
||||
:param mode: The mode. If given, this argument must be "r".
|
||||
:returns: An Image object.
|
||||
:returns: An :py:class:`~PIL.Image.Image` object.
|
||||
:exception IOError: If the file cannot be found, or the image cannot be
|
||||
opened and identified.
|
||||
"""
|
||||
|
|
@ -2022,7 +2030,7 @@ def alpha_composite(im1, im2):
|
|||
:param im1: The first image.
|
||||
:param im2: The second image. Must have the same mode and size as
|
||||
the first image.
|
||||
:returns: An Image object.
|
||||
:returns: An :py:class:`~PIL.Image.Image` object.
|
||||
"""
|
||||
|
||||
im1.load()
|
||||
|
|
@ -2045,7 +2053,7 @@ def blend(im1, im2, alpha):
|
|||
the second image is returned. There are no restrictions on the
|
||||
alpha value. If necessary, the result is clipped to fit into
|
||||
the allowed output range.
|
||||
:returns: An Image object.
|
||||
:returns: An :py:class:`~PIL.Image.Image` object.
|
||||
"""
|
||||
|
||||
im1.load()
|
||||
|
|
@ -2080,7 +2088,7 @@ def eval(image, *args):
|
|||
|
||||
:param image: The input image.
|
||||
:param function: A function object, taking one integer argument.
|
||||
:returns: An Image object.
|
||||
:returns: An :py:class:`~PIL.Image.Image` object.
|
||||
"""
|
||||
|
||||
return image.point(args[0])
|
||||
|
|
@ -2094,7 +2102,7 @@ def merge(mode, bands):
|
|||
:param bands: A sequence containing one single-band image for
|
||||
each band in the output image. All bands must have the
|
||||
same size.
|
||||
:returns: An Image object.
|
||||
:returns: An :py:class:`~PIL.Image.Image` object.
|
||||
"""
|
||||
|
||||
if getmodebands(mode) != len(bands) or "*" in mode:
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user