matplotlib中文字体

import matplotlib.pyplot as plt
import matplotlib.font_manager as font_manager
import seaborn as snsfont_manager.fontManager.addfont(r'C:\Users\Admin\AppData\Local\Microsoft\Windows\Fonts\NotoSansSC-Regular.otf')
plt.figure(figsize=(20, 10),dpi=128,
)

python2 打印中文问题 UnicodeEncodeError: ‘ascii‘ codec can‘t encode characters in position

先上代码

pfmt_ascii = pprint.pformat(pyobj_json).encode('ascii')
pfmt_utf_8 = pfmt_ascii.decode('unicode-escape').encode('utf-8')
sys.stdout.write(bytes(pfmt_utf_8))
sys.stdout.write('\n')
sys.stdout.flush()

原理分析

pformant所作的工作，除了排版，还有多此一举的把每个ascii不可打印的uint8字节转义。（判断可打印：isprintable）
结尾的.encode('ascii')可有可无，因为pformant的返回结果保证str中的每一个uint8都是ascii可打印的char。

'\x4e\x2d' → r'\u4e2d'

我们希望能够直接阅读汉字，就要把pformat的输出还原成ascii不可打印的uint8字节。
这就要通过.decode('unicode-escape')。
结尾的.encode('utf-8')可有可无，因为.decode('unicode-escape')的返回结果保证str中的每一个uint8都是ascii不可打印的uint8字节。

r'\u4e2d' → u'中'

linux终端颜色

详情请参考ANSI转义码

从RGB获取ANSI转移码

def rgb_escape(R, G, B, is_foreground=True):try:for X in (R, G, B):assert isinstance(X, int) and X >= 0 and X < 256, 'RGB must be integer in range [0, 255]'except:return ''finally:if is_foreground:return '\033[38;2;{};{};{}m'.format(R, G, B)else:return '\033[48;2;{};{};{}m'.format(R, G, B)def color_print(string, foreground=None, background=None):buffer = ''try:R, G, B = map_name_rgb[foreground]buffer += rgb_escape(R, G, B, is_foreground=True)except:passbuffer += stringtry:R, G, B = map_name_rgb[background]buffer += rgb_escape(R, G, B, is_foreground=False)except:passstdout.write(buffer)if __name__ == '__main__':for color_name in map_name_rgb:color_print('{}, '.format(color_name), foreground=color_name)for color_name in map_name_rgb:color_print('{}, '.format(color_name), background=color_name)

效果如图所示:

从颜色名称获取RGB

name	RGB
black	(0, 0, 0)
white	(255, 255, 255)
red	(255, 0, 0)
lime	(0, 255, 0)
blue	(0, 0, 255)
yellow	(255, 255, 0)
cyan	(0, 255, 255)
magenta	(255, 0, 255)
silver	(192, 192, 192)
gray	(128, 128, 128)
maroon	(128, 0, 0)
olive	(128, 128, 0)
green	(0, 128, 0)
purple	(128, 0, 128)
teal	(0, 128, 128)
navy	(0, 0, 128)
dark red	(139, 0, 0)
brown	(165, 42, 42)
firebrick	(178, 34, 34)
crimson	(220, 20, 60)
tomato	(255, 99, 71)
coral	(255, 127, 80)
indian red	(205, 92, 92)
light coral	(240, 128, 128)
dark salmon	(233, 150, 122)
salmon	(250, 128, 114)
light salmon	(255, 160, 122)
orange red	(255, 69, 0)
dark orange	(255, 140, 0)
orange	(255, 165, 0)
gold	(255, 215, 0)
dark golden rod	(184, 134, 11)
golden rod	(218, 165, 32)
pale golden rod	(238, 232, 170)
dark khaki	(189, 183, 107)
khaki	(240, 230, 140)
yellow green	(154, 205, 50)
dark olive green	(85, 107, 47)
olive drab	(107, 142, 35)
lawn green	(124, 252, 0)
chartreuse	(127, 255, 0)
green yellow	(173, 255, 47)
dark green	(0, 100, 0)
forest green	(34, 139, 34)
lime green	(50, 205, 50)
light green	(144, 238, 144)
pale green	(152, 251, 152)
dark sea green	(143, 188, 143)
medium spring green	(0, 250, 154)
spring green	(0, 255, 127)
sea green	(46, 139, 87)
medium aqua marine	(102, 205, 170)
medium sea green	(60, 179, 113)
light sea green	(32, 178, 170)
dark slate gray	(47, 79, 79)
dark cyan	(0, 139, 139)
aqua	(0, 255, 255)
light cyan	(224, 255, 255)
dark turquoise	(0, 206, 209)
turquoise	(64, 224, 208)
medium turquoise	(72, 209, 204)
pale turquoise	(175, 238, 238)
aqua marine	(127, 255, 212)
flower blue	(100, 149, 237)
deep sky blue	(0, 191, 255)
dodger blue	(30, 144, 255)
light blue	(173, 216, 230)
sky blue	(135, 206, 235)
light sky blue	(135, 206, 250)
midnight blue	(25, 25, 112)
dark blue	(0, 0, 139)
medium blue	(0, 0, 205)
royal blue	(65, 105, 225)
blue violet	(138, 43, 226)
indigo	(75, 0, 130)
dark slate blue	(72, 61, 139)
slate blue	(106, 90, 205)
medium slate blue	(123, 104, 238)
medium purple	(147, 112, 219)
dark magenta	(139, 0, 139)
dark violet	(148, 0, 211)
dark orchid	(153, 50, 204)
medium orchid	(186, 85, 211)
thistle	(216, 191, 216)
plum	(221, 160, 221)
violet	(238, 130, 238)
orchid	(218, 112, 214)
medium violet red	(199, 21, 133)
pale violet red	(219, 112, 147)
deep pink	(255, 20, 147)
hot pink	(255, 105, 180)
light pink	(255, 182, 193)
pink	(255, 192, 203)
antique white	(250, 235, 215)
beige	(245, 245, 220)
bisque	(255, 228, 196)
blanched almond	(255, 235, 205)
wheat	(245, 222, 179)
corn silk	(255, 248, 220)
lemon chiffon	(255, 250, 205)
light golden rod yellow	(250, 250, 210)
light yellow	(255, 255, 224)
saddle brown	(139, 69, 19)
sienna	(160, 82, 45)
chocolate	(210, 105, 30)
peru	(205, 133, 63)
sandy brown	(244, 164, 96)
burly wood	(222, 184, 135)
tan	(210, 180, 140)
rosy brown	(188, 143, 143)
moccasin	(255, 228, 181)
navajo white	(255, 222, 173)
peach puff	(255, 218, 185)
misty rose	(255, 228, 225)
lavender blush	(255, 240, 245)
linen	(250, 240, 230)
old lace	(253, 245, 230)
papaya whip	(255, 239, 213)
sea shell	(255, 245, 238)
mint cream	(245, 255, 250)
slate gray	(112, 128, 144)
light slate gray	(119, 136, 153)
light steel blue	(176, 196, 222)
lavender	(230, 230, 250)
floral white	(255, 250, 240)
alice blue	(240, 248, 255)
ghost white	(248, 248, 255)
honeydew	(240, 255, 240)
ivory	(255, 255, 240)
azure	(240, 255, 255)
snow	(255, 250, 250)
dim gray	(105, 105, 105)
dark gray	(169, 169, 169)
light gray	(211, 211, 211)
gainsboro	(220, 220, 220)
white smoke	(245, 245, 245)

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