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?
我已经知道了颜色转义，我使用他们在我的bash提示前一段时间。不管怎样,都要谢谢您。 我想要的是将它与日志模块集成在一起，经过几次尝试和错误后，我最终做到了这一点。 这是我最后得出的结论:
BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE = range(8)
#The background is set with 40 plus the number of the color, and the foreground with 30
#These are the sequences need to get colored ouput
RESET_SEQ = "\033[0m"
COLOR_SEQ = "\033[1;%dm"
BOLD_SEQ = "\033[1m"
def formatter_message(message, use_color = True):
if use_color:
message = message.replace("$RESET", RESET_SEQ).replace("$BOLD", BOLD_SEQ)
else:
message = message.replace("$RESET", "").replace("$BOLD", "")
return message
COLORS = {
'WARNING': YELLOW,
'INFO': WHITE,
'DEBUG': BLUE,
'CRITICAL': YELLOW,
'ERROR': RED
}
class ColoredFormatter(logging.Formatter):
def __init__(self, msg, use_color = True):
logging.Formatter.__init__(self, msg)
self.use_color = use_color
def format(self, record):
levelname = record.levelname
if self.use_color and levelname in COLORS:
levelname_color = COLOR_SEQ % (30 + COLORS[levelname]) + levelname + RESET_SEQ
record.levelname = levelname_color
return logging.Formatter.format(self, record)
要使用它，请创建自己的Logger:
# Custom logger class with multiple destinations
class ColoredLogger(logging.Logger):
FORMAT = "[$BOLD%(name)-20s$RESET][%(levelname)-18s] %(message)s ($BOLD%(filename)s$RESET:%(lineno)d)"
COLOR_FORMAT = formatter_message(FORMAT, True)
def __init__(self, name):
logging.Logger.__init__(self, name, logging.DEBUG)
color_formatter = ColoredFormatter(self.COLOR_FORMAT)
console = logging.StreamHandler()
console.setFormatter(color_formatter)
self.addHandler(console)
return
logging.setLoggerClass(ColoredLogger)
以防有人需要。
Be careful if you're using more than one logger or handler: ColoredFormatter is changing the record object, which is passed further to other handlers or propagated to other loggers. If you have configured file loggers etc. you probably don't want to have the colors in the log files. To avoid that, it's probably best to simply create a copy of record with copy.copy() before manipulating the levelname attribute, or to reset the levelname to the previous value, before returning the formatted string (credit to Michael in the comments).
下面是一个适用于任何平台的解决方案。如果没有，告诉我，我会更新的。
它是如何工作的:在支持ANSI转义的平台上使用它们(非Windows)，在Windows上它确实使用API调用来改变控制台颜色。
该脚本确实破解了标准库中的logging.StreamHandler.emit方法，并向其添加了包装器。
TestColorer.py
# Usage: add Colorer.py near you script and import it.
import logging
import Colorer
logging.warn("a warning")
logging.error("some error")
logging.info("some info")
Colorer.py
#!/usr/bin/env python
# encoding: utf-8
import logging
# now we patch Python code to add color support to logging.StreamHandler
def add_coloring_to_emit_windows(fn):
# add methods we need to the class
def _out_handle(self):
import ctypes
return ctypes.windll.kernel32.GetStdHandle(self.STD_OUTPUT_HANDLE)
out_handle = property(_out_handle)
def _set_color(self, code):
import ctypes
# Constants from the Windows API
self.STD_OUTPUT_HANDLE = -11
hdl = ctypes.windll.kernel32.GetStdHandle(self.STD_OUTPUT_HANDLE)
ctypes.windll.kernel32.SetConsoleTextAttribute(hdl, code)
setattr(logging.StreamHandler, '_set_color', _set_color)
def new(*args):
FOREGROUND_BLUE = 0x0001 # text color contains blue.
FOREGROUND_GREEN = 0x0002 # text color contains green.
FOREGROUND_RED = 0x0004 # text color contains red.
FOREGROUND_INTENSITY = 0x0008 # text color is intensified.
FOREGROUND_WHITE = FOREGROUND_BLUE|FOREGROUND_GREEN |FOREGROUND_RED
# winbase.h
STD_INPUT_HANDLE = -10
STD_OUTPUT_HANDLE = -11
STD_ERROR_HANDLE = -12
# wincon.h
FOREGROUND_BLACK = 0x0000
FOREGROUND_BLUE = 0x0001
FOREGROUND_GREEN = 0x0002
FOREGROUND_CYAN = 0x0003
FOREGROUND_RED = 0x0004
FOREGROUND_MAGENTA = 0x0005
FOREGROUND_YELLOW = 0x0006
FOREGROUND_GREY = 0x0007
FOREGROUND_INTENSITY = 0x0008 # foreground color is intensified.
BACKGROUND_BLACK = 0x0000
BACKGROUND_BLUE = 0x0010
BACKGROUND_GREEN = 0x0020
BACKGROUND_CYAN = 0x0030
BACKGROUND_RED = 0x0040
BACKGROUND_MAGENTA = 0x0050
BACKGROUND_YELLOW = 0x0060
BACKGROUND_GREY = 0x0070
BACKGROUND_INTENSITY = 0x0080 # background color is intensified.
levelno = args[1].levelno
if(levelno>=50):
color = BACKGROUND_YELLOW | FOREGROUND_RED | FOREGROUND_INTENSITY | BACKGROUND_INTENSITY
elif(levelno>=40):
color = FOREGROUND_RED | FOREGROUND_INTENSITY
elif(levelno>=30):
color = FOREGROUND_YELLOW | FOREGROUND_INTENSITY
elif(levelno>=20):
color = FOREGROUND_GREEN
elif(levelno>=10):
color = FOREGROUND_MAGENTA
else:
color = FOREGROUND_WHITE
args[0]._set_color(color)
ret = fn(*args)
args[0]._set_color( FOREGROUND_WHITE )
#print "after"
return ret
return new
def add_coloring_to_emit_ansi(fn):
# add methods we need to the class
def new(*args):
levelno = args[1].levelno
if(levelno>=50):
color = '\x1b[31m' # red
elif(levelno>=40):
color = '\x1b[31m' # red
elif(levelno>=30):
color = '\x1b[33m' # yellow
elif(levelno>=20):
color = '\x1b[32m' # green
elif(levelno>=10):
color = '\x1b[35m' # pink
else:
color = '\x1b[0m' # normal
args[1].msg = color + args[1].msg + '\x1b[0m' # normal
#print "after"
return fn(*args)
return new
import platform
if platform.system()=='Windows':
# Windows does not support ANSI escapes and we are using API calls to set the console color
logging.StreamHandler.emit = add_coloring_to_emit_windows(logging.StreamHandler.emit)
else:
# all non-Windows platforms are supporting ANSI escapes so we use them
logging.StreamHandler.emit = add_coloring_to_emit_ansi(logging.StreamHandler.emit)
#log = logging.getLogger()
#log.addFilter(log_filter())
#//hdlr = logging.StreamHandler()
#//hdlr.setFormatter(formatter())
我修改了Sorin提供的原始示例，并将StreamHandler子类化为ColorizedConsoleHandler。
他们的解决方案的缺点是它修改了消息，并且因为修改了实际的日志消息，任何其他处理程序也将得到修改后的消息。
在我们的例子中，这导致日志文件中有颜色代码，因为我们使用了多个记录器。
下面的类只在支持ANSI的平台上工作，但是向它添加Windows颜色代码应该很简单。
import copy
import logging
class ColoredConsoleHandler(logging.StreamHandler):
def emit(self, record):
# Need to make a actual copy of the record
# to prevent altering the message for other loggers
myrecord = copy.copy(record)
levelno = myrecord.levelno
if(levelno >= 50): # CRITICAL / FATAL
color = '\x1b[31m' # red
elif(levelno >= 40): # ERROR
color = '\x1b[31m' # red
elif(levelno >= 30): # WARNING
color = '\x1b[33m' # yellow
elif(levelno >= 20): # INFO
color = '\x1b[32m' # green
elif(levelno >= 10): # DEBUG
color = '\x1b[35m' # pink
else: # NOTSET and anything else
color = '\x1b[0m' # normal
myrecord.msg = color + str(myrecord.msg) + '\x1b[0m' # normal
logging.StreamHandler.emit(self, myrecord)
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$RESET %(message)s
airmind的另一种方法是将所有东西都放在一个类中:
class ColorFormatter(logging.Formatter):
FORMAT = ("[$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
请看下面的解决方案。流处理程序应该是做着色的事情，然后你可以选择着色单词而不仅仅是整行(与Formatter)。
http://plumberjack.blogspot.com/2010/12/colorizing-logging-output-in-terminals.html
快速和肮脏的解决方案预定义的日志级别，而不定义一个新的类。
logging.addLevelName( logging.WARNING, "\033[1;31m%s\033[1;0m" % logging.getLevelName(logging.WARNING))
logging.addLevelName( logging.ERROR, "\033[1;41m%s\033[1;0m" % logging.getLevelName(logging.ERROR))
刚刚回答了类似的问题:Python |在shell中更改文本颜色
这个想法是使用clint库。它支持MAC, Linux和Windows shell (CLI)。
几年前，我为自己编写了一个彩色流处理程序。然后我偶然发现了这个页面，发现了一组人们复制/粘贴的代码片段:-(。我的流处理程序目前只适用于UNIX (Linux, Mac OS X)，但优点是它可以在PyPI(和GitHub)上使用，而且使用起来非常简单。它也有一个Vim语法模式:-)。将来我可能会把它扩展到Windows上。
安装软件包:
$ pip install coloredlogs
要确认它是否有效:
$ coloredlogs --demo
要开始使用自己的代码:
$ python
> import coloredlogs, logging
> coloredlogs.install()
> logging.info("It works!")
2014-07-30 21:21:26 peter-macbook root[7471] INFO It works!
上面示例中显示的默认日志格式包含日期、时间、主机名、记录器名称、PID、日志级别和日志消息。这是它在实践中的样子:
注意:当使用Git Bash与MinTTY
Git Bash在windows上有一些记录的怪癖: Winpty和Git Bash
对于ANSI转义代码和ncurses风格的字符重写和动画，你需要用winpty作为命令的前缀。
$ winpty coloredlogs --demo
$ winpty python your_colored_logs_script.py
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。
更新:因为这是我长久以来一直想要解决的问题，所以我为像我这样只想用简单方法做事的懒人写了一个库:zenlog
Colorlog在这方面非常出色。它在PyPI上可用(因此可以通过pip install colorlog进行安装)，并且是主动维护的。
下面是一个快速复制粘贴代码片段，用于设置日志记录和打印像样的日志消息:
import logging
LOG_LEVEL = logging.DEBUG
LOGFORMAT = " %(log_color)s%(levelname)-8s%(reset)s | %(log_color)s%(message)s%(reset)s"
from colorlog import ColoredFormatter
logging.root.setLevel(LOG_LEVEL)
formatter = ColoredFormatter(LOGFORMAT)
stream = logging.StreamHandler()
stream.setLevel(LOG_LEVEL)
stream.setFormatter(formatter)
log = logging.getLogger('pythonConfig')
log.setLevel(LOG_LEVEL)
log.addHandler(stream)
log.debug("A quirky message only developers care about")
log.info("Curious users might want to know this")
log.warn("Something is wrong and any user should be informed")
log.error("Serious stuff, this is red for a reason")
log.critical("OH NO everything is on fire")
输出:
以下是我的解决方案:
class ColouredFormatter(logging.Formatter):
RESET = '\x1B[0m'
RED = '\x1B[31m'
YELLOW = '\x1B[33m'
BRGREEN = '\x1B[01;32m' # grey in solarized for terminals
def format(self, record, colour=False):
message = super().format(record)
if not colour:
return message
level_no = record.levelno
if level_no >= logging.CRITICAL:
colour = self.RED
elif level_no >= logging.ERROR:
colour = self.RED
elif level_no >= logging.WARNING:
colour = self.YELLOW
elif level_no >= logging.INFO:
colour = self.RESET
elif level_no >= logging.DEBUG:
colour = self.BRGREEN
else:
colour = self.RESET
message = colour + message + self.RESET
return message
class ColouredHandler(logging.StreamHandler):
def __init__(self, stream=sys.stdout):
super().__init__(stream)
def format(self, record, colour=False):
if not isinstance(self.formatter, ColouredFormatter):
self.formatter = ColouredFormatter()
return self.formatter.format(record, colour)
def emit(self, record):
stream = self.stream
try:
msg = self.format(record, stream.isatty())
stream.write(msg)
stream.write(self.terminator)
self.flush()
except Exception:
self.handleError(record)
h = ColouredHandler()
h.formatter = ColouredFormatter('{asctime} {levelname:8} {message}', '%Y-%m-%d %H:%M:%S', '{')
logging.basicConfig(level=logging.DEBUG, handlers=[h])
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。
我有两个提交要添加，其中一个只着色消息(ColoredFormatter)，另一个着色整行(ColorizingStreamHandler)。与以前的解决方案相比，这些方案还包括更多的ANSI颜色代码。
部分内容来源(经过修改): 上面的帖子，以及http://plumberjack.blogspot.com/2010/12/colorizing-logging-output-in-terminals.html。
只给信息上色:
class ColoredFormatter(logging.Formatter):
"""Special custom formatter for colorizing log messages!"""
BLACK = '\033[0;30m'
RED = '\033[0;31m'
GREEN = '\033[0;32m'
BROWN = '\033[0;33m'
BLUE = '\033[0;34m'
PURPLE = '\033[0;35m'
CYAN = '\033[0;36m'
GREY = '\033[0;37m'
DARK_GREY = '\033[1;30m'
LIGHT_RED = '\033[1;31m'
LIGHT_GREEN = '\033[1;32m'
YELLOW = '\033[1;33m'
LIGHT_BLUE = '\033[1;34m'
LIGHT_PURPLE = '\033[1;35m'
LIGHT_CYAN = '\033[1;36m'
WHITE = '\033[1;37m'
RESET = "\033[0m"
def __init__(self, *args, **kwargs):
self._colors = {logging.DEBUG: self.DARK_GREY,
logging.INFO: self.RESET,
logging.WARNING: self.BROWN,
logging.ERROR: self.RED,
logging.CRITICAL: self.LIGHT_RED}
super(ColoredFormatter, self).__init__(*args, **kwargs)
def format(self, record):
"""Applies the color formats"""
record.msg = self._colors[record.levelno] + record.msg + self.RESET
return logging.Formatter.format(self, record)
def setLevelColor(self, logging_level, escaped_ansi_code):
self._colors[logging_level] = escaped_ansi_code
为整行上色:
class ColorizingStreamHandler(logging.StreamHandler):
BLACK = '\033[0;30m'
RED = '\033[0;31m'
GREEN = '\033[0;32m'
BROWN = '\033[0;33m'
BLUE = '\033[0;34m'
PURPLE = '\033[0;35m'
CYAN = '\033[0;36m'
GREY = '\033[0;37m'
DARK_GREY = '\033[1;30m'
LIGHT_RED = '\033[1;31m'
LIGHT_GREEN = '\033[1;32m'
YELLOW = '\033[1;33m'
LIGHT_BLUE = '\033[1;34m'
LIGHT_PURPLE = '\033[1;35m'
LIGHT_CYAN = '\033[1;36m'
WHITE = '\033[1;37m'
RESET = "\033[0m"
def __init__(self, *args, **kwargs):
self._colors = {logging.DEBUG: self.DARK_GREY,
logging.INFO: self.RESET,
logging.WARNING: self.BROWN,
logging.ERROR: self.RED,
logging.CRITICAL: self.LIGHT_RED}
super(ColorizingStreamHandler, self).__init__(*args, **kwargs)
@property
def is_tty(self):
isatty = getattr(self.stream, 'isatty', None)
return isatty and isatty()
def emit(self, record):
try:
message = self.format(record)
stream = self.stream
if not self.is_tty:
stream.write(message)
else:
message = self._colors[record.levelno] + message + self.RESET
stream.write(message)
stream.write(getattr(self, 'terminator', '\n'))
self.flush()
except (KeyboardInterrupt, SystemExit):
raise
except:
self.handleError(record)
def setLevelColor(self, logging_level, escaped_ansi_code):
self._colors[logging_level] = escaped_ansi_code
import logging
import sys
colors = {'pink': '\033[95m', 'blue': '\033[94m', 'green': '\033[92m', 'yellow': '\033[93m', 'red': '\033[91m',
'ENDC': '\033[0m', 'bold': '\033[1m', 'underline': '\033[4m'}
logging.basicConfig(stream=sys.stdout, level=logging.DEBUG)
def str_color(color, data):
return colors[color] + str(data) + colors['ENDC']
params = {'param1': id1, 'param2': id2}
logging.info('\nParams:' + str_color("blue", str(params)))`
一个简单但非常灵活的工具为任何终端文本着色是'colout'。
pip install colout
myprocess | colout REGEX_WITH_GROUPS color1,color2...
其中'myprocess'输出中的任何匹配正则表达式第1组的文本都将用color1着色，第2组用color2着色，等等。
例如:
tail -f /var/log/mylogfile | colout '^(\w+ \d+ [\d:]+)|(\w+\.py:\d+ .+\(\)): (.+)$' white,black,cyan bold,bold,normal
也就是说，第一个正则表达式组(parens)匹配日志文件中的初始日期，第二组匹配python文件名、行号和函数名，第三组匹配其后的日志消息。我还使用了“粗体/法线”的平行序列以及颜色序列。这看起来像:
请注意，不匹配任何正则表达式的行或行的一部分仍然被回显，因此这与'grep——color'不同——输出中没有过滤掉任何内容。
显然，这是足够灵活的，您可以将它用于任何进程，而不仅仅是跟踪日志文件。每当我想给一些东西上色时，我通常只是快速地创建一个新的正则表达式。出于这个原因，我更喜欢colout而不是任何自定义日志文件着色工具，因为我只需要学习一种工具，不管我在为什么着色:日志记录、测试输出、在终端中突出显示代码片段的语法等等。
它还避免了在日志文件本身中实际转储ANSI代码，恕我说这是一个坏主意，因为它会破坏日志文件中的grepping模式之类的事情，除非您始终记得在grep正则表达式中匹配ANSI代码。
您可以导入colorlog模块，并使用它的ColoredFormatter对日志消息进行着色。
例子
主模块样板:
import logging
import os
import sys
try:
import colorlog
except ImportError:
pass
def setup_logging():
root = logging.getLogger()
root.setLevel(logging.DEBUG)
format = '%(asctime)s - %(levelname)-8s - %(message)s'
date_format = '%Y-%m-%d %H:%M:%S'
if 'colorlog' in sys.modules and os.isatty(2):
cformat = '%(log_color)s' + format
f = colorlog.ColoredFormatter(cformat, date_format,
log_colors = { 'DEBUG' : 'reset', 'INFO' : 'reset',
'WARNING' : 'bold_yellow', 'ERROR': 'bold_red',
'CRITICAL': 'bold_red' })
else:
f = logging.Formatter(format, date_format)
ch = logging.StreamHandler()
ch.setFormatter(f)
root.addHandler(ch)
setup_logging()
log = logging.getLogger(__name__)
该代码仅在安装了colorlog模块并且输出实际发送到终端时才启用日志消息中的颜色。这可以避免在日志输出重定向时将转义序列写入文件。
此外，还设置了一个自定义配色方案，更适合具有深色背景的终端。
一些日志调用示例:
log.debug ('Hello Debug')
log.info ('Hello Info')
log.warn ('Hello Warn')
log.error ('Hello Error')
log.critical('Hello Critical')
输出:
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")
另一个解决方案，用ZetaSyanthis的颜色:
def config_log(log_level):
def set_color(level, code):
level_fmt = "\033[1;" + str(code) + "m%s\033[1;0m"
logging.addLevelName( level, level_fmt % logging.getLevelName(level) )
std_stream = sys.stdout
isatty = getattr(std_stream, 'isatty', None)
if isatty and isatty():
levels = [logging.DEBUG, logging.CRITICAL, logging.WARNING, logging.ERROR]
for idx, level in enumerate(levels):
set_color(level, 30 + idx )
set_color(logging.DEBUG, 0)
logging.basicConfig(stream=std_stream, level=log_level)
在__main__函数中调用它一次。我这里有这样的东西:
options, arguments = p.parse_args()
log_level = logging.DEBUG if options.verbose else logging.WARNING
config_log(log_level)
它还验证输出是否为控制台，否则不使用颜色。
好吧，我想我应该加上我的彩色记录器的变化。
这没什么特别的，但是使用起来非常简单，并且不会更改记录对象，因此如果使用文件处理程序，就可以避免将ANSI转义序列记录到日志文件中。不影响日志信息的格式化。
如果你已经在使用日志记录模块的Formatter，你所要做的就是用ColoredFormatter替换忠告处理程序Formatter来获得有颜色的级别名称。如果你正在记录整个应用程序，你只需要为顶级记录器这样做。
colored_log.py
#!/usr/bin/env python
from copy import copy
from logging import Formatter
MAPPING = {
'DEBUG' : 37, # white
'INFO' : 36, # cyan
'WARNING' : 33, # yellow
'ERROR' : 31, # red
'CRITICAL': 41, # white on red bg
}
PREFIX = '\033['
SUFFIX = '\033[0m'
class ColoredFormatter(Formatter):
def __init__(self, patern):
Formatter.__init__(self, patern)
def format(self, record):
colored_record = copy(record)
levelname = colored_record.levelname
seq = MAPPING.get(levelname, 37) # default white
colored_levelname = ('{0}{1}m{2}{3}') \
.format(PREFIX, seq, levelname, SUFFIX)
colored_record.levelname = colored_levelname
return Formatter.format(self, colored_record)
示例使用
app.py
#!/usr/bin/env python
import logging
from colored_log import ColoredFormatter
# Create top level logger
log = logging.getLogger("main")
# Add console handler using our custom ColoredFormatter
ch = logging.StreamHandler()
ch.setLevel(logging.DEBUG)
cf = ColoredFormatter("[%(name)s][%(levelname)s] %(message)s (%(filename)s:%(lineno)d)")
ch.setFormatter(cf)
log.addHandler(ch)
# Add file handler
fh = logging.FileHandler('app.log')
fh.setLevel(logging.DEBUG)
ff = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
fh.setFormatter(ff)
log.addHandler(fh)
# Set log level
log.setLevel(logging.DEBUG)
# Log some stuff
log.debug("app has started")
log.info("Logging to 'app.log' in the script dir")
log.warning("This is my last warning, take heed")
log.error("This is an error")
log.critical("He's dead, Jim")
# Import a sub-module
import sub_module
sub_module.py
#!/usr/bin/env python
import logging
log = logging.getLogger('main.sub_module')
log.debug("Hello from the sub module")
结果
终端输出
app.log内容
2017-09-29 00:32:23,434 - main - DEBUG - app has started
2017-09-29 00:32:23,434 - main - INFO - Logging to 'app.log' in the script dir
2017-09-29 00:32:23,435 - main - WARNING - This is my last warning, take heed
2017-09-29 00:32:23,435 - main - ERROR - This is an error
2017-09-29 00:32:23,435 - main - CRITICAL - He's dead, Jim
2017-09-29 00:32:23,435 - main.sub_module - DEBUG - Hello from the sub module
当然，您可以随心所欲地设置终端和日志文件输出的格式。只有日志级别将被着色。
我希望有人发现这是有用的，而不是只是太多的相同。：）
Python示例文件可以从这个GitHub Gist下载: https://gist.github.com/KurtJacobson/48e750701acec40c7161b5a2f79e6bfd
有很多回复。但没有人谈论装修师。这是我的。
因为它要简单得多。
不需要导入任何东西，也不需要编写任何子类:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import logging
NO_COLOR = "\33[m"
RED, GREEN, ORANGE, BLUE, PURPLE, LBLUE, GREY = \
map("\33[%dm".__mod__, range(31, 38))
logging.basicConfig(format="%(message)s", level=logging.DEBUG)
logger = logging.getLogger(__name__)
# the decorator to apply on the logger methods info, warn, ...
def add_color(logger_method, color):
def wrapper(message, *args, **kwargs):
return logger_method(
# the coloring is applied here.
color+message+NO_COLOR,
*args, **kwargs
)
return wrapper
for level, color in zip((
"info", "warn", "error", "debug"), (
GREEN, ORANGE, RED, BLUE
)):
setattr(logger, level, add_color(getattr(logger, level), color))
# this is displayed in red.
logger.error("Launching %s." % __file__)
这将错误设置为红色，调试消息设置为蓝色，等等。就像问题中问的那样。
我们甚至可以使用logger.debug("message"， color=GREY)使包装器接受一个颜色参数来动态设置消息的颜色。
编辑: 这里是在运行时设置颜色的修饰器:
def add_color(logger_method, _color):
def wrapper(message, *args, **kwargs):
color = kwargs.pop("color", _color)
if isinstance(color, int):
color = "\33[%dm" % color
return logger_method(
# the coloring is applied here.
color+message+NO_COLOR,
*args, **kwargs
)
return wrapper
# blah blah, apply the decorator...
# this is displayed in red.
logger.error("Launching %s." % __file__)
# this is displayed in blue
logger.error("Launching %s." % __file__, color=34)
# and this, in grey
logger.error("Launching %s." % __file__, color=GREY)
这是一个包含颜色代码的Enum:
class TerminalColour:
"""
Terminal colour formatting codes
"""
# https://stackoverflow.com/questions/287871/print-in-terminal-with-colors
MAGENTA = '\033[95m'
BLUE = '\033[94m'
GREEN = '\033[92m'
YELLOW = '\033[93m'
RED = '\033[91m'
GREY = '\033[0m' # normal
WHITE = '\033[1m' # bright white
UNDERLINE = '\033[4m'
这可以应用于每个日志级别的名称。请注意，这是一个可怕的黑客。
logging.addLevelName(logging.INFO, "{}{}{}".format(TerminalColour.WHITE, logging.getLevelName(logging.INFO), TerminalColour.GREY))
logging.addLevelName(logging.WARNING, "{}{}{}".format(TerminalColour.YELLOW, logging.getLevelName(logging.WARNING), TerminalColour.GREY))
logging.addLevelName(logging.ERROR, "{}{}{}".format(TerminalColour.RED, logging.getLevelName(logging.ERROR), TerminalColour.GREY))
logging.addLevelName(logging.CRITICAL, "{}{}{}".format(TerminalColour.MAGENTA, logging.getLevelName(logging.CRITICAL), .GREY))
注意，您的日志格式化程序必须包含日志级别的名称
%(levelname)
例如:
LOGGING = {
...
'verbose': {
'format': '%(asctime)s %(levelname)s %(name)s:%(lineno)s %(module)s %(process)d %(thread)d %(message)s'
},
'simple': {
'format': '[%(asctime)s] %(levelname)s %(name)s %(message)s'
},
Python 3解决方案，不需要额外的包
定义一个类
import logging
class CustomFormatter(logging.Formatter):
grey = "\x1b[38;20m"
yellow = "\x1b[33;20m"
red = "\x1b[31;20m"
bold_red = "\x1b[31;1m"
reset = "\x1b[0m"
format = "%(asctime)s - %(name)s - %(levelname)s - %(message)s (%(filename)s:%(lineno)d)"
FORMATS = {
logging.DEBUG: grey + format + reset,
logging.INFO: grey + format + reset,
logging.WARNING: yellow + format + reset,
logging.ERROR: red + format + reset,
logging.CRITICAL: bold_red + format + reset
}
def format(self, record):
log_fmt = self.FORMATS.get(record.levelno)
formatter = logging.Formatter(log_fmt)
return formatter.format(record)
实例化记录器:
# create logger with 'spam_application'
logger = logging.getLogger("My_app")
logger.setLevel(logging.DEBUG)
# create console handler with a higher log level
ch = logging.StreamHandler()
ch.setLevel(logging.DEBUG)
ch.setFormatter(CustomFormatter())
logger.addHandler(ch)
和使用:
logger.debug("debug message")
logger.info("info message")
logger.warning("warning message")
logger.error("error message")
logger.critical("critical message")
结果:
全配色方案:
Windows:
该解决方案适用于Mac OS、IDE终端。看起来Windows命令提示符在默认情况下根本没有颜色。以下是关于如何启用它们的说明，我还没有尝试过https://www.howtogeek.com/322432/how-to-customize-your-command-prompts-color-scheme-with-microsofts-colortool/
下面的解决方案只适用于python 3，但对我来说，它看起来是最清楚的。
其思想是使用日志记录工厂向日志记录对象添加“有色”属性，然后在日志格式中使用这些“有色”属性。
import logging
logger = logging.getLogger(__name__)
def configure_logging(level):
# add 'levelname_c' attribute to log resords
orig_record_factory = logging.getLogRecordFactory()
log_colors = {
logging.DEBUG: "\033[1;34m", # blue
logging.INFO: "\033[1;32m", # green
logging.WARNING: "\033[1;35m", # magenta
logging.ERROR: "\033[1;31m", # red
logging.CRITICAL: "\033[1;41m", # red reverted
}
def record_factory(*args, **kwargs):
record = orig_record_factory(*args, **kwargs)
record.levelname_c = "{}{}{}".format(
log_colors[record.levelno], record.levelname, "\033[0m")
return record
logging.setLogRecordFactory(record_factory)
# now each log record object would contain 'levelname_c' attribute
# and you can use this attribute when configuring logging using your favorite
# method.
# for demo purposes I configure stderr log right here
formatter_c = logging.Formatter("[%(asctime)s] %(levelname_c)s:%(name)s:%(message)s")
stderr_handler = logging.StreamHandler()
stderr_handler.setLevel(level)
stderr_handler.setFormatter(formatter_c)
root_logger = logging.getLogger('')
root_logger.setLevel(logging.DEBUG)
root_logger.addHandler(stderr_handler)
def main():
configure_logging(logging.DEBUG)
logger.debug("debug message")
logger.info("info message")
logger.critical("something unusual happened")
if __name__ == '__main__':
main()
您可以轻松地修改此示例，以创建其他彩色属性(f.e. message_c)，然后使用这些属性(仅)在需要的位置获取彩色文本。
(我最近发现的一个方便的技巧:我有一个带有彩色调试日志的文件，每当我想临时增加我的应用程序的日志级别时，我只需在不同的终端中跟踪-f日志文件，并在屏幕上看到调试日志，w/o更改任何配置并重新启动应用程序)
这是airmind示例的另一个Python3变体。我想要一些在其他例子中没有看到的特性
为终端使用颜色，但不要在文件处理程序中写入不可打印的字符(我为此定义了2个格式化器) 能够覆盖特定日志消息的颜色 从一个文件(在本例中是yaml)配置记录器
注意:我使用了colorama，但是你可以修改它，这样就不需要了。对于我的测试，我只是运行python文件，所以我的类在模块__main__中。你必须更改():__main__。ColoredFormatter到你的模块。
pip install colorama pyyaml
logging.yaml
---
version: 1
disable_existing_loggers: False
formatters:
simple:
format: "%(threadName)s - %(name)s - %(levelname)s - %(message)s"
color:
format: "%(threadName)s - %(name)s - %(levelname)s - %(message)s"
(): __main__.ColoredFormatter
use_color: true
handlers:
console:
class: logging.StreamHandler
level: DEBUG
formatter: color
stream: ext://sys.stdout
info_file_handler:
class: logging.handlers.RotatingFileHandler
level: INFO
formatter: simple
filename: app.log
maxBytes: 20971520
backupCount: 20
encoding: utf8
error_file_handler:
class: logging.handlers.RotatingFileHandler
level: ERROR
formatter: simple
filename: errors.log
maxBytes: 10485760
backupCount: 20
encoding: utf8
root:
level: DEBUG
handlers: [console, info_file_handler, error_file_handler]
main.py
import logging
import logging.config
import os
from logging import Logger
import colorama
import yaml
from colorama import Back, Fore, Style
COLORS = {
"WARNING": Fore.YELLOW,
"INFO": Fore.CYAN,
"DEBUG": Fore.BLUE,
"CRITICAL": Fore.YELLOW,
"ERROR": Fore.RED,
}
class ColoredFormatter(logging.Formatter):
def __init__(self, *, format, use_color):
logging.Formatter.__init__(self, fmt=format)
self.use_color = use_color
def format(self, record):
msg = super().format(record)
if self.use_color:
levelname = record.levelname
if hasattr(record, "color"):
return f"{record.color}{msg}{Style.RESET_ALL}"
if levelname in COLORS:
return f"{COLORS[levelname]}{msg}{Style.RESET_ALL}"
return msg
with open("logging.yaml", "rt") as f:
config = yaml.safe_load(f.read())
logging.config.dictConfig(config)
logger: Logger = logging.getLogger(__name__)
logger.info("Test INFO", extra={"color": Back.RED})
logger.info("Test INFO", extra={"color": f"{Style.BRIGHT}{Back.RED}"})
logger.info("Test INFO")
logger.debug("Test DEBUG")
logger.warning("Test WARN")
输出:
除了按级别着色之外，还可以用交替的颜色突出显示日志消息参数吗?我最近为此写了一些简单的代码。另一个优点是使用Python 3大括号格式进行日志调用。(“{}”)。
查看最新的代码和示例:https://github.com/davidohana/colargulog
日志示例代码:
root_logger = logging.getLogger()
console_handler = logging.StreamHandler(stream=sys.stdout)
console_format = "%(asctime)s - %(levelname)-8s - %(name)-25s - %(message)s"
colored_formatter = ColorizedArgsFormatter(console_format)
console_handler.setFormatter(colored_formatter)
root_logger.addHandler(console_handler)
logger = logging.getLogger(__name__)
logger.info("Hello World")
logger.info("Request from {} handled in {:.3f} ms", socket.gethostname(), 11)
logger.info("Request from {} handled in {:.3f} ms", "127.0.0.1", 33.1)
logger.info("My favorite drinks are {}, {}, {}, {}", "milk", "wine", "tea", "beer")
logger.debug("this is a {} message", logging.getLevelName(logging.DEBUG))
logger.info("this is a {} message", logging.getLevelName(logging.INFO))
logger.warning("this is a {} message", logging.getLevelName(logging.WARNING))
logger.error("this is a {} message", logging.getLevelName(logging.ERROR))
logger.critical("this is a {} message", logging.getLevelName(logging.CRITICAL))
logger.info("Does old-style formatting also work? %s it is, but no colors (yet)", True)
输出:
实现:
"""
colargulog - Python3 Logging with Colored Arguments and new string formatting style
Written by david.ohana@ibm.com
License: Apache-2.0
"""
import logging
import logging.handlers
import re
class ColorCodes:
grey = "\x1b[38;21m"
green = "\x1b[1;32m"
yellow = "\x1b[33;21m"
red = "\x1b[31;21m"
bold_red = "\x1b[31;1m"
blue = "\x1b[1;34m"
light_blue = "\x1b[1;36m"
purple = "\x1b[1;35m"
reset = "\x1b[0m"
class ColorizedArgsFormatter(logging.Formatter):
arg_colors = [ColorCodes.purple, ColorCodes.light_blue]
level_fields = ["levelname", "levelno"]
level_to_color = {
logging.DEBUG: ColorCodes.grey,
logging.INFO: ColorCodes.green,
logging.WARNING: ColorCodes.yellow,
logging.ERROR: ColorCodes.red,
logging.CRITICAL: ColorCodes.bold_red,
}
def __init__(self, fmt: str):
super().__init__()
self.level_to_formatter = {}
def add_color_format(level: int):
color = ColorizedArgsFormatter.level_to_color[level]
_format = fmt
for fld in ColorizedArgsFormatter.level_fields:
search = "(%\(" + fld + "\).*?s)"
_format = re.sub(search, f"{color}\\1{ColorCodes.reset}", _format)
formatter = logging.Formatter(_format)
self.level_to_formatter[level] = formatter
add_color_format(logging.DEBUG)
add_color_format(logging.INFO)
add_color_format(logging.WARNING)
add_color_format(logging.ERROR)
add_color_format(logging.CRITICAL)
@staticmethod
def rewrite_record(record: logging.LogRecord):
if not BraceFormatStyleFormatter.is_brace_format_style(record):
return
msg = record.msg
msg = msg.replace("{", "_{{")
msg = msg.replace("}", "_}}")
placeholder_count = 0
# add ANSI escape code for next alternating color before each formatting parameter
# and reset color after it.
while True:
if "_{{" not in msg:
break
color_index = placeholder_count % len(ColorizedArgsFormatter.arg_colors)
color = ColorizedArgsFormatter.arg_colors[color_index]
msg = msg.replace("_{{", color + "{", 1)
msg = msg.replace("_}}", "}" + ColorCodes.reset, 1)
placeholder_count += 1
record.msg = msg.format(*record.args)
record.args = []
def format(self, record):
orig_msg = record.msg
orig_args = record.args
formatter = self.level_to_formatter.get(record.levelno)
self.rewrite_record(record)
formatted = formatter.format(record)
# restore log record to original state for other handlers
record.msg = orig_msg
record.args = orig_args
return formatted
class BraceFormatStyleFormatter(logging.Formatter):
def __init__(self, fmt: str):
super().__init__()
self.formatter = logging.Formatter(fmt)
@staticmethod
def is_brace_format_style(record: logging.LogRecord):
if len(record.args) == 0:
return False
msg = record.msg
if '%' in msg:
return False
count_of_start_param = msg.count("{")
count_of_end_param = msg.count("}")
if count_of_start_param != count_of_end_param:
return False
if count_of_start_param != len(record.args):
return False
return True
@staticmethod
def rewrite_record(record: logging.LogRecord):
if not BraceFormatStyleFormatter.is_brace_format_style(record):
return
record.msg = record.msg.format(*record.args)
record.args = []
def format(self, record):
orig_msg = record.msg
orig_args = record.args
self.rewrite_record(record)
formatted = self.formatter.format(record)
# restore log record to original state for other handlers
record.msg = orig_msg
record.args = orig_args
return formatted
一个方便的带有tput颜色的bash脚本
# Simple using tput
bold=$(tput bold)
reset=$(tput sgr0)
fblack=$(tput setaf 0)
fred=$(tput setaf 1)
fgreen=$(tput setaf 2)
fyellow=$(tput setaf 3)
fblue=$(tput setaf 4)
fmagenta=$(tput setaf 5)
fcyan=$(tput setaf 6)
fwhite=$(tput setaf 7)
fnotused=$(tput setaf 8)
freset=$(tput setaf 9)
bblack=$(tput setab 0)
bred=$(tput setab 1)
bgreen=$(tput setab 2)
byellow=$(tput setab 3)
bblue=$(tput setab 4)
bmagenta=$(tput setab 5)
bcyan=$(tput setab 6)
bwhite=$(tput setab 7)
bnotused=$(tput setab 8)
breset=$(tput setab 9)
# 0 - Emergency (emerg) $fred # something is wrong... go red
# 1 - Alerts (alert) $fred # something is wrong... go red
# 2 - Critical (crit) $fred # something is wrong... go red
# 3 - Errors (err) $fred # something is wrong... go red
# 4 - Warnings (warn) $fyellow # yellow yellow dirty logs
# 5 - Notification (notice) $fwhite # common stuff
# 6 - Information (info) $fblue # sky is blue
# 7 - Debug (debug) $fgreen # lot of stuff to read... go green
安装colorlog包，你可以立即在你的日志消息中使用颜色:
获取一个记录器实例，就像您通常所做的那样。 设置日志级别。您也可以使用像DEBUG这样的常量 和INFO从日志模块直接。 将消息格式化程序设置为所提供的ColoredFormatter 通过colorlog库。
import colorlog
logger = colorlog.getLogger()
logger.setLevel(colorlog.colorlog.logging.DEBUG)
handler = colorlog.StreamHandler()
handler.setFormatter(colorlog.ColoredFormatter())
logger.addHandler(handler)
logger.debug("Debug message")
logger.info("Information message")
logger.warning("Warning message")
logger.error("Error message")
logger.critical("Critical message")
输出:
更新:额外信息
只需更新ColoredFormatter:
handler.setFormatter(colorlog.ColoredFormatter('%(log_color)s [%(asctime)s] %(levelname)s [%(filename)s.%(funcName)s:%(lineno)d] %(message)s', datefmt='%a, %d %b %Y %H:%M:%S'))
输出:
包:
pip install colorlog
输出:
Collecting colorlog
Downloading colorlog-4.6.2-py2.py3-none-any.whl (10.0 kB)
Installing collected packages: colorlog
Successfully installed colorlog-4.6.2
coloredlogs
Instalation
pip install coloredlogs
使用
最小的用法:
import logging
import coloredlogs
coloredlogs.install() # install a handler on the root logger
logging.debug('message with level debug')
logging.info('message with level info')
logging.warning('message with level warning')
logging.error('message with level error')
logging.critical('message with level critical')
结果:
从消息级调试开始:
import logging
import coloredlogs
coloredlogs.install(level='DEBUG') # install a handler on the root logger with level debug
logging.debug('message with level debug')
logging.info('message with level info')
logging.warning('message with level warning')
logging.error('message with level error')
logging.critical('message with level critical')
结果:
从库中隐藏消息:
import logging
import coloredlogs
logger = logging.getLogger(__name__) # get a specific logger object
coloredlogs.install(level='DEBUG') # install a handler on the root logger with level debug
coloredlogs.install(level='DEBUG', logger=logger) # pass a specific logger object
logging.debug('message with level debug')
logging.info('message with level info')
logging.warning('message with level warning')
logging.error('message with level error')
logging.critical('message with level critical')
结果:
格式化日志消息:
import logging
import coloredlogs
logger = logging.getLogger(__name__) # get a specific logger object
coloredlogs.install(level='DEBUG') # install a handler on the root logger with level debug
coloredlogs.install(level='DEBUG', logger=logger) # pass a specific logger object
coloredlogs.install(
level='DEBUG', logger=logger,
fmt='%(asctime)s.%(msecs)03d %(filename)s:%(lineno)d %(levelname)s %(message)s'
)
logging.debug('message with level debug')
logging.info('message with level info')
logging.warning('message with level warning')
logging.error('message with level error')
logging.critical('message with level critical')
结果:
可用的格式属性:
%(asctime)s - Time as human-readable string, when logging call was issued %(created)f - Time as float when logging call was issued %(filename)s - File name %(funcName)s - Name of function containing the logging call %(hostname)s - System hostname %(levelname)s - Text logging level %(levelno)s - Integer logging level %(lineno)d - Line number where the logging call was issued %(message)s - Message passed to logging call (same as %(msg)s) %(module)s - File name without extension where the logging call was issued %(msecs)d - Millisecond part of the time when logging call was issued %(msg)s - Message passed to logging call (same as %(message)s) %(name)s - Logger name %(pathname)s - Full pathname to file containing the logging call %(process)d - Process ID %(processName)s - Process name %(programname)s - System programname %(relativeCreated)d - Time as integer in milliseconds when logging call was issued, relative to the time when logging module was loaded %(thread)d - Thread ID %(threadName)s - Thread name %(username)s - System username
来源:
Coloredlogs包
日志库
使用丰富的库
Rich提供了一个日志处理程序，它将对Python日志模块编写的文本进行格式化和着色。
它很容易使用和可定制+工作在cmd.exe, Windows终端，ConEmu和Jupyter笔记本!(我告诉你，我试过很多包，只有rich的颜色在笔记本上有用。)
Rich还带有许多其他奇特的功能。
安装
pip install rich
最小的例子:
import logging
from rich.logging import RichHandler
FORMAT = "%(message)s"
logging.basicConfig(
level="NOTSET", format=FORMAT, datefmt="[%X]", handlers=[RichHandler()]
) # set level=20 or logging.INFO to turn of debug
logger = logging.getLogger("rich")
logger.debug("debug...")
logger.info("info...")
logger.warning("warning...")
logger.error("error...")
logger.fatal("fatal...")
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")})
这是@Sergey Pleshakov的出色回答的轻微变化，他只对关卡使用颜色，并像预期的那样使用basicConfig:
class CustomFormatter(logging.Formatter):
white = "\x1b[97;20m"
grey = "\x1b[38;20m"
green = "\x1b[32;20m"
cyan = "\x1b[36;20m"
yellow = "\x1b[33;20m"
red = "\x1b[31;20m"
bold_red = "\x1b[31;1m"
reset = "\x1b[0m"
fmt = "%(asctime)s - {}%(levelname)-8s{} - %(name)s.%(funcName)s - %(message)s"
FORMATS = {
logging.DEBUG: fmt.format(grey, reset),
logging.INFO: fmt.format(green, reset),
logging.WARNING: fmt.format(yellow, reset),
logging.ERROR: fmt.format(red, reset),
logging.CRITICAL: fmt.format(bold_red, reset),
}
def format(self, record):
log_fmt = self.FORMATS.get(record.levelno)
formatter = logging.Formatter(log_fmt, datefmt="%H:%M:%S")
return formatter.format(record)
handler = logging.StreamHandler()
handler.setFormatter(CustomFormatter())
logging.basicConfig(
level=logging.DEBUG,
handlers=[handler]
)
简化的日志库:
class handler(logging.StreamHandler):
colors = {
logging.DEBUG: '\033[37m',
logging.INFO: '\033[36m',
logging.WARNING: '\033[33m',
logging.ERROR: '\033[31m',
logging.CRITICAL: '\033[101m',
}
reset = '\033[0m'
fmtr = logging.Formatter('%(levelname)s %(message)s')
def format(self, record):
color = self.colors[record.levelno]
log = self.fmtr.format(record)
reset = self.reset
return color + log + reset
logging.basicConfig(level=logging.DEBUG, handlers=[handler()])
使用龙卷风库
Tornado web框架提供了一些实用程序，包括Tornado .log. logformatter格式化程序，它可以在没有框架其他部分的情况下使用。
对不支持ANSI颜色代码的Windows版本的颜色支持是通过使用colorama库启用的。希望使用它的应用程序必须首先调用colorama.init来初始化colorama。
import logging
import tornado.log
# import colorama # uncomment on some Windows versions
# colorama.init()
consoleHandler = logging.StreamHandler()
consoleHandler.setFormatter(tornado.log.LogFormatter())
logging.basicConfig(level=logging.DEBUG, handlers=[consoleHandler])
logger = logging.getLogger("test")
logger.info("hello world")
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")
只要你不想去发明轮子。
只需pip安装loguru，然后:
from loguru import logger
if __name__ == '__main__':
message = "Message text"
logger.info(message)
logger.debug(message)
logger.warning(message)
logger.success(message)
logger.error(message)
logger.critical(message)
输出:
您可以更改格式，颜色，写入文件从盒子…这里是文档
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())
我已经创建了一个类，它将用您选择的任何颜色显示错误级别名称。大部分代码只是定义颜色模式，然后覆盖对象中的一些变量供日志库使用
class ColorLognameFormatter(logging.Formatter):
_level_str_len = 8
# Define the color codes
_reset_str = '\x1b[0m'
_grey_str = '\x1b[38;21m'
_blue_str = '\x1b[38;5;39m'
_yllw_str = '\x1b[38;5;226m'
_sred_str = '\x1b[38;5;196m'
_bred_str = '\x1b[31;1m'
# Make the basic strings
_debug_color_str = f"{_grey_str}DEBUG{_reset_str}".ljust(_level_str_len + len(_reset_str) + len(_grey_str), ' ')
_info_color_str = f"{_blue_str}INFO{_reset_str}".ljust(_level_str_len + len(_reset_str) + len(_blue_str), ' ')
_warn_color_str = f"{_yllw_str}WARNING{_reset_str}".ljust(_level_str_len + len(_reset_str) + len(_yllw_str), ' ')
_error_color_str = f"{_sred_str}ERROR{_reset_str}".ljust(_level_str_len + len(_reset_str) + len(_sred_str), ' ')
_crit_color_str = f"{_bred_str}CRITICAL{_reset_str}".ljust(_level_str_len + len(_reset_str) + len(_bred_str), ' ')
# Format into a dict
_color_levelname = {'DEBUG': _debug_color_str,
'INFO': _info_color_str,
'WARNING': _warn_color_str,
'ERROR': _error_color_str,
'CRITICAL': _error_color_str}
def __init__(self, fmt='%(levelname)s | %(message)s', *args, **kwargs):
super().__init__(fmt, *args, **kwargs)
def format(self, record):
# When calling format, replace the levelname with a colored version
# Note: the string size is greatly increased because of the color codes
record.levelname = self._color_levelname[record.levelname]
return super().format(record)
主要的变化是它将默认的fmt字符串设置为%(levelname)s | %(message)s，并在调用format之前替换levelname
用法:
from ColorLognameFormatter import ColorLognameFormatter
import logging
log_level = logging.INFO
logger = logging.getLogger(__name__)
logger.setLevel(log_level)
stdout_handler = logging.StreamHandler()
stdout_handler.setLevel(log_level)
stdout_handler.setFormatter(ColorLognameFormatter())
logger.addHandler(stdout_handler)
logger.propagate = False
logger.info("Test")
