Python的log日志打印

Python日志打印，循环保存10个日志文件。

# 日志打印, logger.py
import logging
import os.path
from logging import StreamHandler
from logging.handlers import RotatingFileHandler


class Logger(object):

    def __init__(self, dirname, basename):
        """

        :param dirname: 日志路径
        :param basename: 日志名字
        """
        self.logger = logging.getLogger(basename)
        del self.logger.handlers[:]
        dirname = os.path.abspath(dirname)
        filename = os.path.join(dirname,
                                basename if basename.endswith(".log")
                                else basename + ".log")
        max_bytes = 10 * 1024 * 1024
        backup_count = 10

        if not os.path.exists(dirname):
            os.makedirs(dirname, exist_ok=True)

        formatter = logging.Formatter(
            '%(asctime)s - %(filename)s'
            '[line:%(lineno)d] - %(levelname)s'
            ': %(message)s'
        )

        stream_handler = StreamHandler()
        stream_handler.setFormatter(formatter)
        stream_handler.setLevel(logging.DEBUG)

        log_file_handler = RotatingFileHandler(filename=filename,
                                               maxBytes=max_bytes,
                                               backupCount=backup_count)
        log_file_handler.suffix = '%Y%m%d.log' if basename.endswith(".log") \
            else '%Y%m%d.' + os.path.splitext(basename)[-1]
        log_file_handler.setFormatter(formatter)
        log_file_handler.setLevel(logging.DEBUG)

        self.logger.setLevel(logging.DEBUG)
        self.logger.addHandler(log_file_handler)
        self.logger.addHandler(stream_handler)

    def get_logger(self):
        return self.logger

# 日志打印，cfg.py
from logger import Logger

# -----日志配置-----
LOG_FORMAT = '%(asctime)s - %(filename)s[line:%(lineno)d] - %(levelname)s: %(message)s'
LOG_FILE = 'log'
log = Logger('./base_logs/', LOG_FILE).get_logger()

打印日志的代码：

from cfg import log

log.info(f"{user_no}_已完成!")

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