如何在Python中将彩色文本输出到终端?


当前回答

对于字符

您的终端很可能使用Unicode(通常为UTF-8编码)字符,所以只需选择合适的字体即可看到您喜爱的字符。Unicode字符U+2588,“完整块”是我建议您使用的字符。

尝试以下操作:

import unicodedata
fp= open("character_list", "w")
for index in xrange(65536):
    char= unichr(index)
    try: its_name= unicodedata.name(char)
    except ValueError: its_name= "N/A"
    fp.write("%05d %04x %s %s\n" % (index, index, char.encode("UTF-8"), its_name)
fp.close()

稍后使用您喜爱的查看器检查文件。

对于颜色

curses是您要使用的模块。查看本教程。

其他回答

在Windows上,您可以使用模块“win32console”(在某些Python发行版中可用)或模块“ctypes”(Python 2.5及更高版本)访问Win32 API。

要查看支持这两种方式的完整代码,请参阅Testoob中的彩色控制台报告代码。

ctypes示例:

import ctypes

# Constants from the Windows API
STD_OUTPUT_HANDLE = -11
FOREGROUND_RED    = 0x0004 # text color contains red.

def get_csbi_attributes(handle):
    # Based on IPython's winconsole.py, written by Alexander Belchenko
    import struct
    csbi = ctypes.create_string_buffer(22)
    res = ctypes.windll.kernel32.GetConsoleScreenBufferInfo(handle, csbi)
    assert res

    (bufx, bufy, curx, cury, wattr,
    left, top, right, bottom, maxx, maxy) = struct.unpack("hhhhHhhhhhh", csbi.raw)
    return wattr


handle = ctypes.windll.kernel32.GetStdHandle(STD_OUTPUT_HANDLE)
reset = get_csbi_attributes(handle)

ctypes.windll.kernel32.SetConsoleTextAttribute(handle, FOREGROUND_RED)
print "Cherry on top"
ctypes.windll.kernel32.SetConsoleTextAttribute(handle, reset)

在我看来,这是最简单的方法。只要您具有所需颜色的RGB值,这应该可以工作:

def colored(r, g, b, text):
    return f"\033[38;2;{r};{g};{b}m{text}\033[0m"

打印红色文本的示例:

text = 'Hello, World!'
colored_text = colored(255, 0, 0, text)
print(colored_text)

#or

print(colored(255, 0, 0, 'Hello, World!'))

多色文本

text = colored(255, 0, 0, 'Hello, ') + colored(0, 255, 0, 'World')
print(text)

定义开始颜色的字符串和结束颜色的字符串。然后打印文本,开始字符串在前面,结束字符串在结尾。

CRED = '\033[91m'
CEND = '\033[0m'
print(CRED + "Error, does not compute!" + CEND)

这将在Bash和urxvt中使用Zenburn风格的配色方案生成以下内容:

通过实验,我们可以获得更多的颜色:

注意:\33[5m和\33[6m闪烁。

这样我们可以创建一个完整的颜色集合:

CEND      = '\33[0m'
CBOLD     = '\33[1m'
CITALIC   = '\33[3m'
CURL      = '\33[4m'
CBLINK    = '\33[5m'
CBLINK2   = '\33[6m'
CSELECTED = '\33[7m'

CBLACK  = '\33[30m'
CRED    = '\33[31m'
CGREEN  = '\33[32m'
CYELLOW = '\33[33m'
CBLUE   = '\33[34m'
CVIOLET = '\33[35m'
CBEIGE  = '\33[36m'
CWHITE  = '\33[37m'

CBLACKBG  = '\33[40m'
CREDBG    = '\33[41m'
CGREENBG  = '\33[42m'
CYELLOWBG = '\33[43m'
CBLUEBG   = '\33[44m'
CVIOLETBG = '\33[45m'
CBEIGEBG  = '\33[46m'
CWHITEBG  = '\33[47m'

CGREY    = '\33[90m'
CRED2    = '\33[91m'
CGREEN2  = '\33[92m'
CYELLOW2 = '\33[93m'
CBLUE2   = '\33[94m'
CVIOLET2 = '\33[95m'
CBEIGE2  = '\33[96m'
CWHITE2  = '\33[97m'

CGREYBG    = '\33[100m'
CREDBG2    = '\33[101m'
CGREENBG2  = '\33[102m'
CYELLOWBG2 = '\33[103m'
CBLUEBG2   = '\33[104m'
CVIOLETBG2 = '\33[105m'
CBEIGEBG2  = '\33[106m'
CWHITEBG2  = '\33[107m'

以下是生成测试的代码:

x = 0
for i in range(24):
  colors = ""
  for j in range(5):
    code = str(x+j)
    colors = colors + "\33[" + code + "m\\33[" + code + "m\033[0m "
  print(colors)
  x = x + 5

这里有一种更有效的方法。

# Colours
pure_red = "\033[0;31m"
dark_green = "\033[0;32m"
orange = "\033[0;33m"
dark_blue = "\033[0;34m"
bright_purple = "\033[0;35m"
dark_cyan = "\033[0;36m"
dull_white = "\033[0;37m"
pure_black = "\033[0;30m"
bright_red = "\033[0;91m"
light_green = "\033[0;92m"
yellow = "\033[0;93m"
bright_blue = "\033[0;94m"
magenta = "\033[0;95m"
light_cyan = "\033[0;96m"
bright_black = "\033[0;90m"
bright_white = "\033[0;97m"
cyan_back = "\033[0;46m"
purple_back = "\033[0;45m"
white_back = "\033[0;47m"
blue_back = "\033[0;44m"
orange_back = "\033[0;43m"
green_back = "\033[0;42m"
pink_back = "\033[0;41m"
grey_back = "\033[0;40m"
grey = '\033[38;4;236m'
bold = "\033[1m"
underline = "\033[4m"
italic = "\033[3m"
darken = "\033[2m"
invisible = '\033[08m'
reverse_colour = '\033[07m'
reset_colour = '\033[0m'
grey = "\x1b[90m"

用户手册

reverseColor表示您反转刚刚选择的颜色,但处于高亮模式(默认为白色)。pink_back(green_back等…带有back的)表示它以粉色突出显示(基于名称)。reset_colour重置颜色(详见图1)。

我相信我不需要解释太多,因为它列在变量名中。

如果您想尝试代码,请转到replit IDE测试代码。示例代码在这里


代码(图1):

输出(图2):

这里有一个简单的函数,我使用它来打印彩色文本消息,而不必记住ANSI代码,而是使用标准RGB元组来定义前景和背景颜色。

def print_in_color(txt_msg, fore_tuple, back_tuple, ):
    # Prints the text_msg in the foreground color specified by fore_tuple with the background specified by back_tuple
    # text_msg is the text, fore_tuple is foreground color tuple (r,g,b), back_tuple is background tuple (r,g,b)
    rf,bf,gf = fore_tuple
    rb,gb,bb = back_tuple
    msg = '{0}' + txt_msg
    mat = '\33[38;2;' + str(rf) + ';' + str(gf) + ';' + str(bf) + ';48;2;' + str(rb) + ';' +str(gb) + ';' + str(bb) + 'm'
    print(msg .format(mat))
    print('\33[0m') # Returns default print color to back to black

# Example of use using a message with variables
fore_color = 'cyan'
back_color = 'dark green'
msg = 'foreground color is {0} and the background color is {1}'.format(fore_color, back_color)
print_in_color(msg, (0,255,255), (0,127,127))