如何在Python中将彩色文本输出到终端?
当前回答
我最喜欢的方式是使用祝福库(完整披露:我写的)。例如:
from blessings import Terminal
t = Terminal()
print t.red('This is red.')
print t.bold_bright_red_on_black('Bright red on black')
要打印彩色砖,最可靠的方法是使用背景色打印空间。我使用此技术绘制鼻子进度条:
print t.on_green(' ')
您还可以在特定位置打印:
with t.location(0, 5):
print t.on_yellow(' ')
如果你必须在游戏过程中使用其他终端功能,你也可以这样做。您可以使用Python的标准字符串格式来保持其可读性:
print '{t.clear_eol}You just cleared a {t.bold}whole{t.normal} line!'.format(t=t)
Blessings的优点在于它能在各种终端上工作,而不仅仅是ANSI颜色的终端。它还将不可读的转义序列排除在代码之外,同时保持使用简洁。玩得高兴
其他回答
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。
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。
这里有一个快速类,它包装了一个打印功能,可以快速添加颜色,而无需安装其他软件包。
class PrintColored:
DEFAULT = '\033[0m'
# Styles
BOLD = '\033[1m'
ITALIC = '\033[3m'
UNDERLINE = '\033[4m'
UNDERLINE_THICK = '\033[21m'
HIGHLIGHTED = '\033[7m'
HIGHLIGHTED_BLACK = '\033[40m'
HIGHLIGHTED_RED = '\033[41m'
HIGHLIGHTED_GREEN = '\033[42m'
HIGHLIGHTED_YELLOW = '\033[43m'
HIGHLIGHTED_BLUE = '\033[44m'
HIGHLIGHTED_PURPLE = '\033[45m'
HIGHLIGHTED_CYAN = '\033[46m'
HIGHLIGHTED_GREY = '\033[47m'
HIGHLIGHTED_GREY_LIGHT = '\033[100m'
HIGHLIGHTED_RED_LIGHT = '\033[101m'
HIGHLIGHTED_GREEN_LIGHT = '\033[102m'
HIGHLIGHTED_YELLOW_LIGHT = '\033[103m'
HIGHLIGHTED_BLUE_LIGHT = '\033[104m'
HIGHLIGHTED_PURPLE_LIGHT = '\033[105m'
HIGHLIGHTED_CYAN_LIGHT = '\033[106m'
HIGHLIGHTED_WHITE_LIGHT = '\033[107m'
STRIKE_THROUGH = '\033[9m'
MARGIN_1 = '\033[51m'
MARGIN_2 = '\033[52m' # seems equal to MARGIN_1
# colors
BLACK = '\033[30m'
RED_DARK = '\033[31m'
GREEN_DARK = '\033[32m'
YELLOW_DARK = '\033[33m'
BLUE_DARK = '\033[34m'
PURPLE_DARK = '\033[35m'
CYAN_DARK = '\033[36m'
GREY_DARK = '\033[37m'
BLACK_LIGHT = '\033[90m'
RED = '\033[91m'
GREEN = '\033[92m'
YELLOW = '\033[93m'
BLUE = '\033[94m'
PURPLE = '\033[95m'
CYAN = '\033[96m'
WHITE = '\033[96m'
def __init__(self):
self.print_original = print # old value to the original print function
self.current_color = self.DEFAULT
def __call__(self,
*values: object, sep: str | None = None,
end: str | None = None,
file: str | None = None,
flush: bool = False,
color: str|None = None,
default_color: str|None = None,
):
if default_color:
self.current_color = default_color
default = self.current_color
if color:
values = (color, *values, default) # wrap the content within a selected color an a default
else:
values = (*values, default) # wrap the content within a selected color an a default
self.print_original(*values, end=end, file=file, flush=flush)
用法
class PrintColored:
DEFAULT = '\033[0m'
# Styles
BOLD = '\033[1m'
ITALIC = '\033[3m'
UNDERLINE = '\033[4m'
UNDERLINE_THICK = '\033[21m'
HIGHLIGHTED = '\033[7m'
HIGHLIGHTED_BLACK = '\033[40m'
HIGHLIGHTED_RED = '\033[41m'
HIGHLIGHTED_GREEN = '\033[42m'
HIGHLIGHTED_YELLOW = '\033[43m'
HIGHLIGHTED_BLUE = '\033[44m'
HIGHLIGHTED_PURPLE = '\033[45m'
HIGHLIGHTED_CYAN = '\033[46m'
HIGHLIGHTED_GREY = '\033[47m'
HIGHLIGHTED_GREY_LIGHT = '\033[100m'
HIGHLIGHTED_RED_LIGHT = '\033[101m'
HIGHLIGHTED_GREEN_LIGHT = '\033[102m'
HIGHLIGHTED_YELLOW_LIGHT = '\033[103m'
HIGHLIGHTED_BLUE_LIGHT = '\033[104m'
HIGHLIGHTED_PURPLE_LIGHT = '\033[105m'
HIGHLIGHTED_CYAN_LIGHT = '\033[106m'
HIGHLIGHTED_WHITE_LIGHT = '\033[107m'
STRIKE_THROUGH = '\033[9m'
MARGIN_1 = '\033[51m'
MARGIN_2 = '\033[52m' # seems equal to MARGIN_1
# colors
BLACK = '\033[30m'
RED_DARK = '\033[31m'
GREEN_DARK = '\033[32m'
YELLOW_DARK = '\033[33m'
BLUE_DARK = '\033[34m'
PURPLE_DARK = '\033[35m'
CYAN_DARK = '\033[36m'
GREY_DARK = '\033[37m'
BLACK_LIGHT = '\033[90m'
RED = '\033[91m'
GREEN = '\033[92m'
YELLOW = '\033[93m'
BLUE = '\033[94m'
PURPLE = '\033[95m'
CYAN = '\033[96m'
WHITE = '\033[96m'
def __init__(self):
self.print_original = print # old value to the original print function
self.current_color = self.DEFAULT
def __call__(self,
*values: object, sep: str | None = None,
end: str | None = None,
file: str | None = None,
flush: bool = False,
color: str|None = None,
default_color: str|None = None,
):
if default_color:
self.current_color = default_color
default = self.current_color
if color:
values = (color, *values, default) # wrap the content within a selected color an a default
else:
values = (*values, default) # wrap the content within a selected color an a default
self.print_original(*values, end=end, file=file, flush=flush)
if __name__ == '__main__':
print = PrintColored()
print("Hello world - default")
print("Hello world - Bold", color=print.BOLD)
print("Hello world - Italic", color=print.ITALIC)
print("Hello world - Underline", color=print.UNDERLINE)
print("Hello world - UNDERLINE_THICK", color=print.UNDERLINE_THICK)
print("Hello world - HighLithted", color=print.HIGHLIGHTED)
print("Hello world - HIGHLIGHTED_BLACK", color=print.HIGHLIGHTED_BLACK)
print("Hello world - HIGHLIGHTED_RED", color=print.HIGHLIGHTED_RED)
print("Hello world - HIGHLIGHTED_GREEN", color=print.HIGHLIGHTED_GREEN)
print("Hello world - HIGHLIGHTED_YELLOW", color=print.HIGHLIGHTED_YELLOW)
print("Hello world - HIGHLIGHTED_BLUE", color=print.HIGHLIGHTED_BLUE)
print("Hello world - HIGHLIGHTED_PURPLE", color=print.HIGHLIGHTED_PURPLE)
print("Hello world - HIGHLIGHTED_CYAN", color=print.HIGHLIGHTED_CYAN)
print("Hello world - HIGHLIGHTED_GREY", color=print.HIGHLIGHTED_GREY)
print("Hello world - HIGHLIGHTED_GREY_LIGHT", color=print.HIGHLIGHTED_GREY_LIGHT)
print("Hello world - HIGHLIGHTED_RED_LIGHT", color=print.HIGHLIGHTED_RED_LIGHT)
print("Hello world - HIGHLIGHTED_GREEN_LIGHT", color=print.HIGHLIGHTED_GREEN_LIGHT)
print("Hello world - HIGHLIGHTED_YELLOW_LIGHT", color=print.HIGHLIGHTED_YELLOW_LIGHT)
print("Hello world - HIGHLIGHTED_BLUE_LIGHT", color=print.HIGHLIGHTED_BLUE_LIGHT)
print("Hello world - HIGHLIGHTED_PURPLE_LIGHT", color=print.HIGHLIGHTED_PURPLE_LIGHT)
print("Hello world - HIGHLIGHTED_CYAN_LIGHT", color=print.HIGHLIGHTED_CYAN_LIGHT)
print("Hello world - HIGHLIGHTED_WHITE_LIGHT", color=print.HIGHLIGHTED_WHITE_LIGHT)
print("Hello world - STRIKE_THROUGH", color=print.STRIKE_THROUGH)
print("Hello world - MARGIN_1", color=print.MARGIN_1)
print("Hello world - MARGIN_2", color=print.MARGIN_2)
print("Hello world - BLACK", color=print.BLACK)
print("Hello world - RED_DARK", color=print.RED_DARK)
print("Hello world - GREEN_DARK", color=print.GREEN_DARK)
print("Hello world - YELLOW_DARK", color=print.YELLOW_DARK)
print("Hello world - BLUE_DARK", color=print.BLUE_DARK)
print("Hello world - PURPLE_DARK", color=print.PURPLE_DARK)
print("Hello world - CYAN_DARK", color=print.CYAN_DARK)
print("Hello world - GREY_DARK", color=print.GREY_DARK)
print("Hello world - BLACK_LIGHT", color=print.BLACK_LIGHT)
print("Hello world - BLACK_LIGHT", color=print.BLACK_LIGHT)
print("Hello world - RED", color=print.RED)
print("Hello world - GREEN", color=print.GREEN)
print("Hello world - YELLOW", color=print.YELLOW)
print("Hello world - BLUE", color=print.BLUE)
print("Hello world - PURPLE", color=print.PURPLE)
print("Hello world - CYAN", color=print.CYAN)
print("Hello world - WHITE", color=print.WHITE)
# Back to normal
print("", default_color=print.DEFAULT)
print("Hello world - default")
输出
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)
下面是一个诅咒示例:
import curses
def main(stdscr):
stdscr.clear()
if curses.has_colors():
for i in xrange(1, curses.COLORS):
curses.init_pair(i, i, curses.COLOR_BLACK)
stdscr.addstr("COLOR %d! " % i, curses.color_pair(i))
stdscr.addstr("BOLD! ", curses.color_pair(i) | curses.A_BOLD)
stdscr.addstr("STANDOUT! ", curses.color_pair(i) | curses.A_STANDOUT)
stdscr.addstr("UNDERLINE! ", curses.color_pair(i) | curses.A_UNDERLINE)
stdscr.addstr("BLINK! ", curses.color_pair(i) | curses.A_BLINK)
stdscr.addstr("DIM! ", curses.color_pair(i) | curses.A_DIM)
stdscr.addstr("REVERSE! ", curses.color_pair(i) | curses.A_REVERSE)
stdscr.refresh()
stdscr.getch()
if __name__ == '__main__':
print "init..."
curses.wrapper(main)
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