Python 如何删除日志筛选器/格式化程序
我有以下日志过滤器:Python 如何删除日志筛选器/格式化程序,python,python-3.x,logging,Python,Python 3.x,Logging,我有以下日志过滤器: class LogFilter: """ Print all messages that do not equal hello.""" def filter(self, record): print ('@@@@@@@ Filter', record) if getattr(record, 'msg') == 'Hello': return False return True
class LogFilter:
"""
Print all messages that do not equal hello."""
def filter(self, record):
print ('@@@@@@@ Filter', record)
if getattr(record, 'msg') == 'Hello':
return False
return True
def __repr__(self):
return 'LogFilter'
然后:
import logging
handler = logging.StreamHandler()
handler.addFilter(LogFilter())
logger = logging.getLogger(__name__)
logger.addHandler(handler)
如何卸下此过滤器?例如,当我尝试:
>>> handler.removeFilter(LogFilter())
>>> handler.removeFilter(LogFilter)
>>> handler.removeFilter('LogFilter') # ????
>>> handler.filters
[LogFilter] # filter is still there.
我还有过滤器。删除筛选器(或格式化程序)的正确方法是什么?如果查看
removeFilter
def removeFilter(self, filter):
"""
Remove the specified filter from this handler.
"""
if filter in self.filters:
self.filters.remove(filter)
您会发现需要实际的过滤器对象才能将其删除。一个快速的解决方法就是这样做
import logging
handler = logging.StreamHandler()
LF = LogFilter()
handler.addFilter(LF)
logger = logging.getLogger(__name__)
logger.addHandler(handler)
然后,当您要移除过滤器时
>>> handler.removeFilter(LF)
>>> handler.filters
[]