前段时间，我看到一个Mono应用程序的输出是彩色的，可能是因为它的日志系统(因为所有的消息都是标准化的)。
现在，Python有了日志记录模块，它允许您指定许多选项来定制输出。所以，我想象类似的事情可能与Python，但我不知道如何在任何地方做到这一点。
是否有办法使Python日志模块输出为彩色?
我想要的(例如)错误显示为红色，调试消息显示为蓝色或黄色，等等。
当然，这可能需要一个兼容的终端(大多数现代终端都是);但如果不支持颜色，我可以退回到原始的日志输出。
有什么想法，我可以得到彩色输出与日志模块?
当前回答
我遇到的麻烦是正确设置格式化程序:
class ColouredFormatter(logging.Formatter):
def __init__(self, msg):
logging.Formatter.__init__(self, msg)
self._init_colour = _get_colour()
def close(self):
# restore the colour information to what it was
_set_colour(self._init_colour)
def format(self, record):
# Add your own colourer based on the other examples
_set_colour( LOG_LEVEL_COLOUR[record.levelno] )
return logging.Formatter.format(self, record)
def init():
# Set up the formatter. Needs to be first thing done.
rootLogger = logging.getLogger()
hdlr = logging.StreamHandler()
fmt = ColouredFormatter('%(message)s')
hdlr.setFormatter(fmt)
rootLogger.addHandler(hdlr)
然后使用:
import coloured_log
import logging
coloured_log.init()
logging.info("info")
logging.debug("debug")
coloured_log.close() # restore colours
其他回答
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$RESET %(message)s
使用pyfancy。
例子:
print(pyfancy.RED + "Hello Red!" + pyfancy.END)
airmind的另一种方法是将所有东西都放在一个类中:
class ColorFormatter(logging.Formatter):
FORMAT = ("[$BOLD%(name)-20s$RESET][%(levelname)-18s] "
"%(message)s "
"($BOLD%(filename)s$RESET:%(lineno)d)")
BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE = range(8)
RESET_SEQ = "\033[0m"
COLOR_SEQ = "\033[1;%dm"
BOLD_SEQ = "\033[1m"
COLORS = {
'WARNING': YELLOW,
'INFO': WHITE,
'DEBUG': BLUE,
'CRITICAL': YELLOW,
'ERROR': RED
}
def formatter_msg(self, msg, use_color = True):
if use_color:
msg = msg.replace("$RESET", self.RESET_SEQ).replace("$BOLD", self.BOLD_SEQ)
else:
msg = msg.replace("$RESET", "").replace("$BOLD", "")
return msg
def __init__(self, use_color=True):
msg = self.formatter_msg(self.FORMAT, use_color)
logging.Formatter.__init__(self, msg)
self.use_color = use_color
def format(self, record):
levelname = record.levelname
if self.use_color and levelname in self.COLORS:
fore_color = 30 + self.COLORS[levelname]
levelname_color = self.COLOR_SEQ % fore_color + levelname + self.RESET_SEQ
record.levelname = levelname_color
return logging.Formatter.format(self, record)
要使用将格式化程序附加到处理程序，如下所示:
handler.setFormatter(ColorFormatter())
logger.addHandler(handler)
我遇到的麻烦是正确设置格式化程序:
class ColouredFormatter(logging.Formatter):
def __init__(self, msg):
logging.Formatter.__init__(self, msg)
self._init_colour = _get_colour()
def close(self):
# restore the colour information to what it was
_set_colour(self._init_colour)
def format(self, record):
# Add your own colourer based on the other examples
_set_colour( LOG_LEVEL_COLOUR[record.levelno] )
return logging.Formatter.format(self, record)
def init():
# Set up the formatter. Needs to be first thing done.
rootLogger = logging.getLogger()
hdlr = logging.StreamHandler()
fmt = ColouredFormatter('%(message)s')
hdlr.setFormatter(fmt)
rootLogger.addHandler(hdlr)
然后使用:
import coloured_log
import logging
coloured_log.init()
logging.info("info")
logging.debug("debug")
coloured_log.close() # restore colours
最简单的解决办法可能是科罗拉多州。
在你的电脑上安装Colorama:
pip install colorama
然后把它添加到你的Python程序中:
import colorama
print(Fore.GREEN + "test123")
如果你需要多颜色的东西，使用YAChalk。
在你的电脑上安装YAChalk:
pip install yachalk
将它添加到你的Python程序中:
from yachalk import chalk
print(chalk.blue("This is blue and {chalk.red("this is red")})
