Đây là một giải pháp hoàn chỉnh, được bao bọc độc đáo dựa trên câu trả lời của Waterboy và nhiều nguồn khác. Nó hỗ trợ đăng nhập vào cả bảng điều khiển và tệp nhật ký, cho phép cài đặt mức nhật ký khác nhau, cung cấp đầu ra được tô màu và có thể dễ dàng cấu hình (cũng có sẵn dưới dạng Gist ):
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# -------------------------------------------------------------------------------
# -
# Python dual-logging setup (console and log file), -
# supporting different log levels and colorized output -
# -
# Created by Fonic <https://github.com/fonic> -
# Date: 04/05/20 -
# -
# Based on: -
# https://stackoverflow.com/a/13733863/1976617 -
# https://uran198.github.io/en/python/2016/07/12/colorful-python-logging.html -
# https://en.wikipedia.org/wiki/ANSI_escape_code#Colors -
# -
# -------------------------------------------------------------------------------
# Imports
import os
import sys
import logging
# Logging formatter supporting colored output
class LogFormatter(logging.Formatter):
COLOR_CODES = {
logging.CRITICAL: "\033[1;35m", # bright/bold magenta
logging.ERROR: "\033[1;31m", # bright/bold red
logging.WARNING: "\033[1;33m", # bright/bold yellow
logging.INFO: "\033[0;37m", # white / light gray
logging.DEBUG: "\033[1;30m" # bright/bold black / dark gray
}
RESET_CODE = "\033[0m"
def __init__(self, color, *args, **kwargs):
super(LogFormatter, self).__init__(*args, **kwargs)
self.color = color
def format(self, record, *args, **kwargs):
if (self.color == True and record.levelno in self.COLOR_CODES):
record.color_on = self.COLOR_CODES[record.levelno]
record.color_off = self.RESET_CODE
else:
record.color_on = ""
record.color_off = ""
return super(LogFormatter, self).format(record, *args, **kwargs)
# Setup logging
def setup_logging(console_log_output, console_log_level, console_log_color, logfile_file, logfile_log_level, logfile_log_color, log_line_template):
# Create logger
# For simplicity, we use the root logger, i.e. call 'logging.getLogger()'
# without name argument. This way we can simply use module methods for
# for logging throughout the script. An alternative would be exporting
# the logger, i.e. 'global logger; logger = logging.getLogger("<name>")'
logger = logging.getLogger()
# Set global log level to 'debug' (required for handler levels to work)
logger.setLevel(logging.DEBUG)
# Create console handler
console_log_output = console_log_output.lower()
if (console_log_output == "stdout"):
console_log_output = sys.stdout
elif (console_log_output == "stderr"):
console_log_output = sys.stderr
else:
print("Failed to set console output: invalid output: '%s'" % console_log_output)
return False
console_handler = logging.StreamHandler(console_log_output)
# Set console log level
try:
console_handler.setLevel(console_log_level.upper()) # only accepts uppercase level names
except:
print("Failed to set console log level: invalid level: '%s'" % console_log_level)
return False
# Create and set formatter, add console handler to logger
console_formatter = LogFormatter(fmt=log_line_template, color=console_log_color)
console_handler.setFormatter(console_formatter)
logger.addHandler(console_handler)
# Create log file handler
try:
logfile_handler = logging.FileHandler(logfile_file)
except Exception as exception:
print("Failed to set up log file: %s" % str(exception))
return False
# Set log file log level
try:
logfile_handler.setLevel(logfile_log_level.upper()) # only accepts uppercase level names
except:
print("Failed to set log file log level: invalid level: '%s'" % logfile_log_level)
return False
# Create and set formatter, add log file handler to logger
logfile_formatter = LogFormatter(fmt=log_line_template, color=logfile_log_color)
logfile_handler.setFormatter(logfile_formatter)
logger.addHandler(logfile_handler)
# Success
return True
# Main function
def main():
# Setup logging
script_name = os.path.splitext(os.path.basename(sys.argv[0]))[0]
if (not setup_logging(console_log_output="stdout", console_log_level="warning", console_log_color=True,
logfile_file=script_name + ".log", logfile_log_level="debug", logfile_log_color=False,
log_line_template="%(color_on)s[%(created)d] [%(threadName)s] [%(levelname)-8s] %(message)s%(color_off)s")):
print("Failed to setup logging, aborting.")
return 1
# Log some messages
logging.debug("Debug message")
logging.info("Info message")
logging.warning("Warning message")
logging.error("Error message")
logging.critical("Critical message")
# Call main function
if (__name__ == "__main__"):
sys.exit(main())
StreamHandlervớisys.stdout, và sau đó nó sẽ đăng nhập vào đó thay vì stderr.