windows上改变cmd中打印字体的颜色

首先抛一个结论：

cmd中没有标准的批处理命令可以改变输出字体的颜色。windowspowershell可以。
所以改变cmd的字体输出颜色需要借助第三方手段。

微软官方的参考文档：点这里去看看

抛出一段python类，再来解释:

#encoding: utf-8
import ctypes

STD_OUTPUT_HANDLE= -11

FOREGROUND_BLUE = 0x01 # text color contains blue.
FOREGROUND_GREEN= 0x02 # text color contains green.
FOREGROUND_RED = 0x04 # text color contains red.
FOREGROUND_INTENSITY = 0x08 # text color is intensified.

BACKGROUND_BLUE = 0x10 # background color contains blue.
BACKGROUND_GREEN= 0x20 # background color contains green.
BACKGROUND_RED = 0x40 # background color contains red.
BACKGROUND_INTENSITY = 0x80 # background color is intensified.

fc_dict = { "r": FOREGROUND_RED, "g": FOREGROUND_GREEN, "b": FOREGROUND_BLUE }
bc_dict = { "r": BACKGROUND_RED, "g": BACKGROUND_GREEN, "b": BACKGROUND_BLUE }

def get_color_flag(desc, is_foreground):
    """
    通过一串描述，获取字体颜色的flag值
    """
    flag = 0
    if len(desc) < 1:
        return flag

    d = None
    if is_foreground:
        d = fc_dict
        flag = FOREGROUND_INTENSITY
    else:
        d = bc_dict
        flag = BACKGROUND_INTENSITY

    for k in desc:
        flag |= d.get(k, 0)
    return flag

class Color:
    std_out_handle = ctypes.windll.kernel32.GetStdHandle(STD_OUTPUT_HANDLE)
    default_color = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE

    def set_cmd_color(self, color, handle=std_out_handle):
        """(color) -> bit
        Example: set_cmd_color(FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE | FOREGROUND_INTENSITY)
        """
        ctypes.windll.kernel32.SetConsoleTextAttribute(handle, color)

    def reset(self):
        self.set_cmd_color(Color.default_color)

    def print_text(self, msg, fdesc = "", bdesc = ""):
        fcolor = get_color_flag(fdesc, True)
        if 0 == fcolor:
            fcolor = Color.default_color
        self.set_cmd_color(fcolor | get_color_flag(bdesc, False))
        print msg
        self.reset()

使用这个类的方法如下：

clr = Color()
clr.print_text("hello red", "r")
clr.print_text("hello green", "g")
clr.print_text("hello yellow", "rg")

可以用过组合“rgb”字符标识来显示不同的颜色

关键代码讲解

ctypes.windll.kernel32.SetConsoleTextAttribute(handle, color)

这句代码通过ctypes的dll调用的方式执行过了kernel32.dll中的设置console字体属性的方法，达到改变颜色的目的。