您可以使用任何语言提供的shell转义字符。这些转义字符以ESC字符开头，后跟一些参数。

例如，要在终端中输出红色“Hello，World！”字符串：

echo "\e[31m Hello, World! \e[0m"

或者从Python脚本：

print("\e[31m Hello world \e[0m")

此外，我写了一篇关于Escape序列的文章，这可能会帮助您更好地理解这个机制。

这在某种程度上取决于您所在的平台。最常见的方法是打印ANSI转义序列。举个简单的例子，这里有一些来自Blender构建脚本的Python代码：

class bcolors:
    HEADER = '\033[95m'
    OKBLUE = '\033[94m'
    OKCYAN = '\033[96m'
    OKGREEN = '\033[92m'
    WARNING = '\033[93m'
    FAIL = '\033[91m'
    ENDC = '\033[0m'
    BOLD = '\033[1m'
    UNDERLINE = '\033[4m'

要使用这样的代码，可以执行以下操作：

print(bcolors.WARNING + "Warning: No active frommets remain. Continue?" + bcolors.ENDC)

或者，使用Python 3.6+：

print(f"{bcolors.WARNING}Warning: No active frommets remain. Continue?{bcolors.ENDC}")

这将在包括OS X、Linux和Windows在内的UNIX上运行（如果您使用ANSICON，或者在Windows 10中启用VT100仿真）。有用于设置颜色、移动光标等的ANSI代码。

如果你要对此感到复杂（如果你正在编写游戏，这听起来就像是这样），你应该看看“诅咒”模块，它为你处理了很多复杂的部分。Python诅咒HowTO是一个很好的介绍。

如果您不使用扩展ASCII（即，不在PC上），则您只能使用127以下的ASCII字符，而“#”或“@”可能是块的最佳选择。如果您可以确保您的终端使用的是IBM扩展的ASCII字符集，那么您有更多的选项。字符176、177、178和219是“块字符”。

一些基于文本的现代程序，如“矮人堡垒”，以图形模式模拟文本模式，并使用经典PC字体的图像。您可以在矮人要塞Wiki中找到一些位图（用户制作的瓷砖）。

文本模式演示比赛有更多的资源用于在文本模式下制作图形。

这个答案试图通过使用正则表达式为文本块中的关键字着色来扩展将着色文本写入终端的概念。

这个答案还使用了Python库Rich，在前面的问题答案中简要介绍了它。在这个答案中，我使用函数rich.color.ANSI_color_NAMES获取一个随机的颜色列表，用于突出显示预定义的搜索项。

import random
import re as regex
from rich import color
from rich import print


def create_dynamic_regex(search_words):
    """
    This function is used to create a dynamic regular expression
    string and a list of random colors. Both these elements will
    be used in the function colorize_text()

    :param search_words: list of search terms
    :return: regular expression search string and a list of colors
    :rtype: string, list
    """
    colors_required = create_list_of_colors(len(search_words))
    number_of_search_words = len(search_words)
    combined_string = ''
    for search_word in search_words:
        number_of_search_words -= 1
        if number_of_search_words != 0:
            current_string = ''.join(r'(\b' + search_word + r'\b)|')
            combined_string = (combined_string + current_string)
        elif number_of_search_words == 0:
            current_string = ''.join(r'(\b' + search_word + r'\b)')
            combined_string = (combined_string + current_string)
    return combined_string, colors_required


def random_color():
    """
    This function is used to create a random color using the
    Python package rich.
    :return: color name
    :rtype: string
    """
    selected_color = random.choice(list(color.ANSI_COLOR_NAMES.keys()))
    return selected_color


def create_list_of_colors(number_of_colors):
    """
    This function is used to generate a list of colors,
    which will be used in the function colorize_text()
    :param number_of_colors:
    :return: list of colors
    :rtype: list
    """
    list_of_colors = [random_color() for _ in range(number_of_colors)]
    return list_of_colors


def colorize_text(text, regex_string, array_of_colors):
    """
    This function is used to colorize specific words in a text string.
    :param text: text string potentially containing specific words to colorize.
    :param regex_string: regular expression search string
    :param array_of_colors: list of colors
    :return: colorized text
    :rtype: string
    """
    available_colors = array_of_colors
    word_regex = regex.compile(f"{regex_string}", regex.IGNORECASE)
    i = 0
    output = ""
    for word in word_regex.finditer(text):
        get_color = available_colors[word.lastindex - 1]
        output += "".join([text[i:word.start()],
                           "[%s]" % available_colors[word.lastindex - 1],
                           text[word.start():word.end()], "[/%s]" % available_colors[word.lastindex - 1]])
        i = word.end()
    return ''.join([output, text[word.end():]])


def generate_console_output(text_to_search, words_to_find):
    """
    This function is used generate colorized text that will
    be outputting to the console.

    :param text_to_search: text string potentially containing specific words to colorize.
    :param words_to_find: list of search terms.
    :return: A string containing colorized words.
    :rtype: string
    """
    search_terms, colors = create_dynamic_regex(words_to_find)
    colorize_html = colorize_text(text_to_search, search_terms, colors)
    print(colorize_html)


text = "The dog chased the cat that was looking for the mouse that the dog was playing with."
words = ['dog', 'cat', 'mouse']
generate_console_output(text, words)

以下是上述代码的打印输出：

我创建了两个用于为文本着色的GIST。

彩色文本终端输出彩色文本HTML输出

asciimatics为构建文本UI和动画提供了可移植的支持：

#!/usr/bin/env python
from asciimatics.effects import RandomNoise  # $ pip install asciimatics
from asciimatics.renderers import SpeechBubble, Rainbow
from asciimatics.scene import Scene
from asciimatics.screen import Screen
from asciimatics.exceptions import ResizeScreenError


def demo(screen):
    render = Rainbow(screen, SpeechBubble('Rainbow'))
    effects = [RandomNoise(screen, signal=render)]
    screen.play([Scene(effects, -1)], stop_on_resize=True)

while True:
    try:
        Screen.wrapper(demo)
        break
    except ResizeScreenError:
        pass

Asciicast：

作为RGB标准的粉丝，我会这样做：

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

class rgb():
    BLACK = (0, 0, 0)
    RED = (255, 0, 0)
    GREEN = (0, 255, 0)
    BLUE = (0, 0, 255)
    YELLOW = (255, 255, 0)
    # and so on ...

print(color_text("hello colored world", rgb.GREEN))

PS：受到CircuitSacul回答的强烈启发

如果您使用的是Windows，那么就在这里！

# Display text on a Windows console
# Windows XP with Python 2.7 or Python 3.2
from ctypes import windll

# Needed for Python2/Python3 diff
try:
    input = raw_input
except:
    pass
STD_OUTPUT_HANDLE = -11
stdout_handle = windll.kernel32.GetStdHandle(STD_OUTPUT_HANDLE)
# Look at the output and select the color you want.
# For instance, hex E is yellow on black.
# Hex 1E is yellow on blue.
# Hex 2E is yellow on green and so on.
for color in range(0, 75):
     windll.kernel32.SetConsoleTextAttribute(stdout_handle, color)
     print("%X --> %s" % (color, "Have a fine day!"))
     input("Press Enter to go on ... ")