现在有一个发布的PyPi模块，用于自定义彩色日志输出:

https://pypi.python.org/pypi/rainbow_logging_handler/

and

https://github.com/laysakura/rainbow_logging_handler

支持Windows 支持Django 可定制的颜色

由于它是作为Python卵分发的，因此非常容易为任何Python应用程序安装它。

import logging

logging.basicConfig(filename="f.log" filemode='w', level=logging.INFO,
                    format = "%(logger_name)s %(color)s  %(message)s %(endColor)s")


class Logger(object):
    __GREEN = "\033[92m"
    __RED = '\033[91m'
    __ENDC = '\033[0m'

    def __init__(self, name):
        self.logger = logging.getLogger(name)
        self.extra={'logger_name': name, 'endColor': self.__ENDC, 'color': self.__GREEN}


    def info(self, msg):
        self.extra['color'] = self.__GREEN
        self.logger.info(msg, extra=self.extra)

    def error(self, msg):
        self.extra['color'] = self.__RED
        self.logger.error(msg, extra=self.extra)

使用

日志记录器("文件名").info("显示绿色文本")

虽然其他解决方案看起来不错，但它们存在一些问题。有些人会给整条线上色，有时这是不需要的，有些人会省略你可能在一起的任何配置。下面的解决方案只影响消息本身。

Code

class ColoredFormatter(logging.Formatter):
    def format(self, record):
        if record.levelno == logging.WARNING:
            record.msg = '\033[93m%s\033[0m' % record.msg
        elif record.levelno == logging.ERROR:
            record.msg = '\033[91m%s\033[0m' % record.msg
        return logging.Formatter.format(self, record)

例子

logger = logging.getLogger('mylogger')
handler = logging.StreamHandler()

log_format = '[%(asctime)s]:%(levelname)-7s:%(message)s'
time_format = '%H:%M:%S'
formatter = ColoredFormatter(log_format, datefmt=time_format)
handler.setFormatter(formatter)
logger.addHandler(handler)

logger.warn('this should be yellow')
logger.error('this should be red')

输出

[17:01:36]:WARNING:this should be yellow
[17:01:37]:ERROR  :this should be red

如您所见，其他所有内容仍然输出并保持初始颜色。如果您想要更改消息以外的任何内容，您可以简单地将颜色代码传递给示例中的log_format。

我更喜欢使用这个片段:

import logging
from enum import Enum

CSI = '\033['

Color = Enum(
    'Color', 'BLACK RED GREEN YELLOW BLUE MAGENTA CYAN WHITE', start=30
)


class AnsiColorHandler(logging.StreamHandler):
    LOGLEVEL_COLORS = {
        'DEBUG': Color.BLUE,
        'INFO': Color.GREEN,
        'WARNING': Color.RED,
        'ERROR': Color.RED,
        'CRITICAL': Color.RED,
    }

    def __init__(self) -> None:
        super().__init__()
        self.formatter = logging.Formatter("%(levelname)-8s - %(message)s")

    def format(self, record: logging.LogRecord) -> str:
        message: str = super().format(record)
        # use colors in tty
        if self.stream.isatty() and (
            color := self.LOGLEVEL_COLORS.get(record.levelname)
        ):
            message = f'{CSI}{color.value}m{message}{CSI}0m'
        return message


# setup logger
# logger = logging.getLogger(__package__)
logger = logging.getLogger(__name__)
logger.addHandler(AnsiColorHandler())

用法:

import logging

from .log import logger

logger.setLevel(logging.DEBUG)
logger.debug("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")

如果有人正在寻找一个漂亮的着色以及自定义日志级别着色，你可以看看这个改编的解决方案(它使用moecololelibrary):

#Install moecolor
pip install moecolor

from moecolor import FormatText as ft

class ConsoleFormatter(logging.Formatter):
    default_format = f"[%(asctime)s | %(name)s | %(funcName)s | LN%(lineno)s | %(levelname)s]: %(message)s"
    time_portion =  ft('%(asctime)s', color='purple').text
    format_portion = ' | %(name)s | %(funcName)s | LN%(lineno)d | %(levelname)s]: '
    FORMATS = {
        'DEBUG': time_portion + ft(format_portion, color='yellow').text + ft('%(message)s', color='fff9ae').text,
        'INFO': time_portion + ft(format_portion, color='green').text + ft('%(message)s', color='#d3ffb3').text,
        'WARNING': time_portion + ft(format_portion, color='orange').text + ft('%(message)s', color='#ffc100').text,
        'TIMER': time_portion + ft(format_portion, color='blue').text + ft('%(message)s', color='#00b4d8').text, # Note, this is a custom log level
        'ERROR': time_portion + ft(format_portion, color='red').text + ft('%(message)s', color='#ba262b').text,
        'CRITICAL': time_portion + ft(format_portion, color='#8D0101').text + ft('%(message)s', color='#D5212E').text,
    }

    def format(self, record):
        _format = self.FORMATS.get(record.levelname, self.default_format)
        formatter = logging.Formatter(_format)
        return formatter.format(record)

你可以这样使用它:

console_handler = logging.StreamHandler()
console_handler.setFormatter(ConsoleFormatter())

我从airmind中更新了支持前景和背景标签的示例。 只需在日志格式化器字符串中使用颜色变量$BLACK - $WHITE即可。设置背景只需使用$BG-BLACK - $BG-WHITE。

import logging

BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE = range(8)

COLORS = {
    'WARNING'  : YELLOW,
    'INFO'     : WHITE,
    'DEBUG'    : BLUE,
    'CRITICAL' : YELLOW,
    'ERROR'    : RED,
    'RED'      : RED,
    'GREEN'    : GREEN,
    'YELLOW'   : YELLOW,
    'BLUE'     : BLUE,
    'MAGENTA'  : MAGENTA,
    'CYAN'     : CYAN,
    'WHITE'    : WHITE,
}

RESET_SEQ = "\033[0m"
COLOR_SEQ = "\033[1;%dm"
BOLD_SEQ  = "\033[1m"

class ColorFormatter(logging.Formatter):

    def __init__(self, *args, **kwargs):
        # can't do super(...) here because Formatter is an old school class
        logging.Formatter.__init__(self, *args, **kwargs)

    def format(self, record):
        levelname = record.levelname
        color     = COLOR_SEQ % (30 + COLORS[levelname])
        message   = logging.Formatter.format(self, record)
        message   = message.replace("$RESET", RESET_SEQ)\
                           .replace("$BOLD",  BOLD_SEQ)\
                           .replace("$COLOR", color)
        for k,v in COLORS.items():
            message = message.replace("$" + k,    COLOR_SEQ % (v+30))\
                             .replace("$BG" + k,  COLOR_SEQ % (v+40))\
                             .replace("$BG-" + k, COLOR_SEQ % (v+40))
        return message + RESET_SEQ

logging.ColorFormatter = ColorFormatter

所以现在你可以在配置文件中简单地执行以下操作:

[formatter_colorFormatter]
class=logging.ColorFormatter
format= $COLOR%(levelname)s $RESET %(asctime)s $BOLD$COLOR%(name)s$RESET %(message)s