python logging添加filter教程

yipeiwu_com5年前Python基础

例子一

def filter(self, record):
    """Our custom record filtering logic.
    Built-in filtering logic (via logging.Filter) is too limiting.
    """
    if not self.filters:
      return True
    matched = False
    rname = record.name # shortcut
    for name in self.filters:
      if rname == name or rname.startswith(name+'.'):
        matched = True
    return matched

例子二

def _create_log_handlers(stream):
  """Create and return a default list of logging.Handler instances.
  Format WARNING messages and above to display the logging level, and
  messages strictly below WARNING not to display it.
  Args:
   stream: See the configure_logging() docstring.
  """
  # Handles logging.WARNING and above.
  error_handler = logging.StreamHandler(stream)
  error_handler.setLevel(logging.WARNING)
  formatter = logging.Formatter("%(levelname)s: %(message)s")
  error_handler.setFormatter(formatter)
 
  # Create a logging.Filter instance that only accepts messages
  # below WARNING (i.e. filters out anything WARNING or above).
  non_error_filter = logging.Filter()
  # The filter method accepts a logging.LogRecord instance.
  non_error_filter.filter = lambda record: record.levelno < logging.WARNING
 
  non_error_handler = logging.StreamHandler(stream)
  non_error_handler.addFilter(non_error_filter)
  formatter = logging.Formatter("%(message)s")
  non_error_handler.setFormatter(formatter)
 
  return [error_handler, non_error_handler]

例子三

def _default_handlers(stream):
  """Return a list of the default logging handlers to use.
  Args:
   stream: See the configure_logging() docstring.
  """
  # Create the filter.
  def should_log(record):
    """Return whether a logging.LogRecord should be logged."""
    # FIXME: Enable the logging of autoinstall messages once
    #    autoinstall is adjusted. Currently, autoinstall logs
    #    INFO messages when importing already-downloaded packages,
    #    which is too verbose.
    if record.name.startswith("webkitpy.thirdparty.autoinstall"):
      return False
    return True
 
  logging_filter = logging.Filter()
  logging_filter.filter = should_log
 
  # Create the handler.
  handler = logging.StreamHandler(stream)
  formatter = logging.Formatter("%(name)s: [%(levelname)s] %(message)s")
  handler.setFormatter(formatter)
  handler.addFilter(logging_filter)
 
  return [handler]

以上这篇python logging添加filter教程就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持【听图阁-专注于Python设计】。

相关文章

Python中获取网页状态码的两个方法

第一种是用urllib模块,下面是例示代码: 复制代码 代码如下: import urllib status=urllib.urlopen("//www.jb51.net").code...

python实现归并排序算法

归并排序是典型的分治法的应用 思想:先递归分解数组,再合并数组 原理:将数组分解最小之后,然后合并两个有序数组,基本思想是比较两个数组的最前面的数,谁小就取谁,取完后,将相应的指针后移以...

Python 经典算法100及解析(小结)

1:找出字符串s="aaabbbccceeefff111144444"中,字符出现次数最多的字符 (1)考虑去重,首先将字符串进行过滤去重,这样在根据这些字符进行循环查询时,将会减少循...

Python基于回溯法子集树模板解决选排问题示例

Python基于回溯法子集树模板解决选排问题示例

本文实例讲述了Python基于回溯法子集树模板解决选排问题。分享给大家供大家参考,具体如下: 问题 从n个元素中挑选m个元素进行排列,每个元素最多可重复r次。其中m∈[2,n],r∈[1...

TensorFLow 不同大小图片的TFrecords存取实例

全部存入一个TFrecords文件,然后读取并显示第一张。 不多写了,直接贴代码。 from PIL import Image import numpy as np import m...