[英]Python logger: limit log file seems not limit my file
So i want to limit my log
file. 所以我想限制我的log
文件。
import logging
import colorlog
from logging.handlers import RotatingFileHandler
def init_logger(dunder_name, testing_mode) -> logging.Logger:
log_format = '[%(asctime)s]: [%(levelname)s]: %(message)s'
bold_seq = '\033[1m'
colorlog_format = (
f'{bold_seq} '
'%(log_color)s '
f'{log_format}'
)
logFile = 'app.log'
colorlog.basicConfig(format=colorlog_format)
handler = RotatingFileHandler(logFile, mode='a', maxBytes=50, backupCount=0, encoding=None, delay=0)
logger = logging.getLogger(dunder_name)
if testing_mode:
logger.setLevel(logging.DEBUG)
else:
logger.setLevel(logging.INFO)
formatter = logging.Formatter(log_format)
handler.setFormatter(formatter)
logger.addHandler(handler)
return logger
And after define maxBytes=50
i cen see that my log file continue to growing ( 4MB
at this moment) 在定义maxBytes=50
之后,我看到我的日志文件继续增长(此刻为4MB
)
What i doing wrong ? 我做错了什么?
Because backupCount
is 0
. 因为backupCount
为0
。
Rollover occurs whenever the current log file is nearly maxBytes in length; 每当当前日志文件的长度接近maxBytes时,就会发生翻转。 but if either of maxBytes or backupCount is zero, rollover never occurs, so you generally want to set backupCount to at least 1, and have a non-zero maxBytes. 但是如果maxBytes或backupCount中的任何一个为零,则永远不会发生过渡,因此通常需要将backupCount设置为至少1,并且maxBytes为非零。
https://docs.python.org/3/library/logging.handlers.html#logging.handlers.RotatingFileHandler https://docs.python.org/3/library/logging.handlers.html#logging.handlers.RotatingFileHandler
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