我无法执行动态记录文件句柄更改。
例如,我有 3 个类(class)
one.py
import logging
class One():
def __init__(self,txt="?"):
logging.debug("Hey, I'm the class One and I say: %s" % txt)
two.py
import logging
class Two():
def __init__(self,txt="?"):
logging.debug("Hey, I'm the class Two and I say: %s" % txt)
config.py
import logging
class Config():
def __init__(self,logfile=None):
logging.debug("Reading config")
self.logfile(logfile)
myapp
from one import One
from two import Two
from config import Config
import logging
#Set default logging
logging.basicConfig(
level=logging.getLevelName(DEBUG),
format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
filename=None
)
logging.info("Starting with stdout")
o=One(txt="STDOUT")
c=Config(logfile="/tmp/logfile")
# Here must be the code that change the logging configuration and set the filehandler
t=One(txt="This must be on the file, not STDOUT")
如果我再次尝试 loggin.basicConfig()
,它不起作用。
最佳答案
确实,如果已经设置了处理程序,logging.basicConfig
什么都不做:
This function does nothing if the root logger already has handlers configured for it.
您需要替换根记录器上的当前处理程序:
import logging
fileh = logging.FileHandler('/tmp/logfile', 'a')
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
fileh.setFormatter(formatter)
log = logging.getLogger() # root logger
for hdlr in log.handlers[:]: # remove all old handlers
log.removeHandler(hdlr)
log.addHandler(fileh) # set the new handler
见 Configuring Logging chapter在 Python Logging HOWTO 中。
关于python - 如何使用不同的类和导入动态地使用 Python 日志更改文件句柄,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/13839554/