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svn+ssh://pythondev@svn.python.org/python/trunk ........ r62914 | skip.montanaro | 2008-05-08 20:45:00 -0400 (Thu, 08 May 2008) | 4 lines Add an example about using NamedTemporaryFile() to replace mktemp(). I'm unclear whether the verbatim text should have been indented or by how much. ........ r62915 | benjamin.peterson | 2008-05-08 20:50:40 -0400 (Thu, 08 May 2008) | 2 lines reindent example ........ r62927 | georg.brandl | 2008-05-09 02:09:25 -0400 (Fri, 09 May 2008) | 2 lines #2788: add .hgignore file. ........ r62928 | georg.brandl | 2008-05-09 02:10:43 -0400 (Fri, 09 May 2008) | 2 lines #2781: fix function name. ........ r62929 | georg.brandl | 2008-05-09 02:18:27 -0400 (Fri, 09 May 2008) | 2 lines Add a sentence to basicConfig() that is in the docstring. ........ r62930 | georg.brandl | 2008-05-09 02:26:54 -0400 (Fri, 09 May 2008) | 2 lines Add another link to colorsys docs. ........ r62931 | georg.brandl | 2008-05-09 02:36:07 -0400 (Fri, 09 May 2008) | 2 lines Add Kodos as a re reference. ........ r62932 | georg.brandl | 2008-05-09 02:39:58 -0400 (Fri, 09 May 2008) | 2 lines Add a note about using reload(). ........ r62933 | andrew.kuchling | 2008-05-09 07:46:05 -0400 (Fri, 09 May 2008) | 3 lines Update planned release date. Uncomment PEP 370 section. Add some module items ........ r62934 | christian.heimes | 2008-05-09 08:19:09 -0400 (Fri, 09 May 2008) | 1 line Add --user option to build_ext ........ r62948 | mark.dickinson | 2008-05-09 13:54:23 -0400 (Fri, 09 May 2008) | 3 lines Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and negative; fix to return an (appropriately signed) zero instead. ........ r62949 | martin.v.loewis | 2008-05-09 14:21:55 -0400 (Fri, 09 May 2008) | 1 line Use the CHM file name that Sphinx assigns. ........
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:mod:`colorsys` --- Conversions between color systems
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=====================================================
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.. module:: colorsys
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:synopsis: Conversion functions between RGB and other color systems.
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.. sectionauthor:: David Ascher <da@python.net>
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The :mod:`colorsys` module defines bidirectional conversions of color values
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between colors expressed in the RGB (Red Green Blue) color space used in
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computer monitors and three other coordinate systems: YIQ, HLS (Hue Lightness
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Saturation) and HSV (Hue Saturation Value). Coordinates in all of these color
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spaces are floating point values. In the YIQ space, the Y coordinate is between
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0 and 1, but the I and Q coordinates can be positive or negative. In all other
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spaces, the coordinates are all between 0 and 1.
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.. seealso::
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More information about color spaces can be found at
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http://www.poynton.com/ColorFAQ.html and
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http://www.cambridgeincolour.com/tutorials/color-spaces.htm.
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The :mod:`colorsys` module defines the following functions:
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.. function:: rgb_to_yiq(r, g, b)
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Convert the color from RGB coordinates to YIQ coordinates.
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.. function:: yiq_to_rgb(y, i, q)
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Convert the color from YIQ coordinates to RGB coordinates.
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.. function:: rgb_to_hls(r, g, b)
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Convert the color from RGB coordinates to HLS coordinates.
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.. function:: hls_to_rgb(h, l, s)
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Convert the color from HLS coordinates to RGB coordinates.
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.. function:: rgb_to_hsv(r, g, b)
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Convert the color from RGB coordinates to HSV coordinates.
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.. function:: hsv_to_rgb(h, s, v)
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Convert the color from HSV coordinates to RGB coordinates.
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Example::
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>>> import colorsys
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>>> colorsys.rgb_to_hsv(.3, .4, .2)
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(0.25, 0.5, 0.4)
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>>> colorsys.hsv_to_rgb(0.25, 0.5, 0.4)
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(0.3, 0.4, 0.2)
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