python 版本的k-means算法

#-*- coding: utf-8 -*-
import numpy as np
from numpy.linalg import cholesky
import matplotlib.pyplot as plt
cnames = {
‘aliceblue‘:            ‘#F0F8FF‘
‘antiquewhite‘:         ‘#FAEBD7‘
‘aqua‘:                 ‘#00FFFF‘
‘aquamarine‘:           ‘#7FFFD4‘
‘azure‘:                ‘#F0FFFF‘
‘beige‘:                ‘#F5F5DC‘
‘bisque‘:               ‘#FFE4C4‘
‘black‘:                ‘#000000‘
‘blanchedalmond‘:       ‘#FFEBCD‘
‘blue‘:                 ‘#0000FF‘
‘blueviolet‘:           ‘#8A2BE2‘
‘brown‘:                ‘#A52A2A‘
‘burlywood‘:            ‘#DEB887‘
‘cadetblue‘:            ‘#5F9EA0‘
‘chartreuse‘:           ‘#7FFF00‘
‘chocolate‘:            ‘#D2691E‘
‘coral‘:                ‘#FF7F50‘
‘cornflowerblue‘:       ‘#6495ED‘
‘cornsilk‘:             ‘#FFF8DC‘
‘crimson‘:              ‘#DC143C‘
‘cyan‘:                 ‘#00FFFF‘
‘darkblue‘:             ‘#00008B‘
‘darkcyan‘:             ‘#008B8B‘
‘darkgoldenrod‘:        ‘#B8860B‘
‘darkgray‘:             ‘#A9A9A9‘
‘darkgreen‘:            ‘#006400‘
‘darkkhaki‘:            ‘#BDB76B‘
‘darkmagenta‘:          ‘#8B008B‘
‘darkolivegreen‘:       ‘#556B2F‘
‘darkorange‘:           ‘#FF8C00‘
‘darkorchid‘:           ‘#9932CC‘
‘darkred‘:              ‘#8B0000‘
‘darksalmon‘:           ‘#E9967A‘
‘darkseagreen‘:         ‘#8FBC8F‘
‘darkslateblue‘:        ‘#483D8B‘
‘darkslategray‘:        ‘#2F4F4F‘
‘darkturquoise‘:        ‘#00CED1‘
‘darkviolet‘:           ‘#9400D3‘
‘deeppink‘:             ‘#FF1493‘
‘deepskyblue‘:          ‘#00BFFF‘
‘dimgray‘:              ‘#696969‘
‘dodgerblue‘:           ‘#1E90FF‘
‘firebrick‘:            ‘#B22222‘
‘floralwhite‘:          ‘#FFFAF0‘
‘forestgreen‘:          ‘#228B22‘
‘fuchsia‘:              ‘#FF00FF‘
‘gainsboro‘:            ‘#DCDCDC‘
‘ghostwhite‘:           ‘#F8F8FF‘
‘gold‘:                 ‘#FFD700‘
‘goldenrod‘:            ‘#DAA520‘
‘gray‘:                 ‘#808080‘
‘green‘:                ‘#008000‘
‘greenyellow‘:          ‘#ADFF2F‘
‘honeydew‘:             ‘#F0FFF0‘
‘hotpink‘:              ‘#FF69B4‘
‘indianred‘:            ‘#CD5C5C‘
‘indigo‘:               ‘#4B0082‘
‘ivory‘:                ‘#FFFFF0‘
‘khaki‘:                ‘#F0E68C‘
‘lavender‘:             ‘#E6E6FA‘
‘lavenderblush‘:        ‘#FFF0F5‘
‘lawngreen‘:            ‘#7CFC00‘
‘lemonchiffon‘:         ‘#FFFACD‘
‘lightblue‘:            ‘#ADD8E6‘
‘lightcoral‘:           ‘#F08080‘
‘lightcyan‘:            ‘#E0FFFF‘
‘lightgoldenrodyellow‘: ‘#FAFAD2‘
‘lightgreen‘:           ‘#90EE90‘
‘lightgray‘:            ‘#D3D3D3‘
‘lightpink‘:            ‘#FFB6C1‘
‘lightsalmon‘:          ‘#FFA07A‘
‘lightseagreen‘:        ‘#20B2AA‘
‘lightskyblue‘:         ‘#87CEFA‘
‘lightslategray‘:       ‘#778899‘
‘lightsteelblue‘:       ‘#B0C4DE‘
‘lightyellow‘:          ‘#FFFFE0‘
‘lime‘:                 ‘#00FF00‘
‘limegreen‘:            ‘#32CD32‘
‘linen‘:                ‘#FAF0E6‘
‘magenta‘:              ‘#FF00FF