日志记录错误回溯(最近最后一次调用)：文件 "/usr/lib/python3.7/logging/__init__.py" ，第 1025 行，在 emit msg = self.format(re

Question

我正在尝试创建一个自定义日志类。

import logging
logging_level = 'INFO'
class Logger:
def __init__(self):
self.logger = logging.getLogger(__name__)
self.logger.setLevel(logging.getLevelName(logging_level))
formatter = logging.Formatter('%(asctime)s - %(name)s%(levelname)s: %(message)s', datefmt='%m/%d/%Y %I:%M:%S%p')
file_handler = logging.FileHandler('logFile.log')
file_handler.setFormatter(format)
stream_handler = logging.StreamHandler() #if we want to print to consol
stream_handler.setFormatter(format)
self.logger.addHandler(file_handler)
self.logger.addHandler(stream_handler)

def logInfo(self):
self.logger.info("Hi")
log = Logger()
log.logInfo()

我一直收到这个错误

--- Logging error ---
Traceback (most recent call last):
File "/usr/lib/python3.7/logging/__init__.py", line 1025, in emit
msg = self.format(record)
File "/usr/lib/python3.7/logging/__init__.py", line 869, in format
return fmt.format(record)
AttributeError: 'builtin_function_or_method' object has no attribute 'format'
Call stack:
File "/home/usr/.../python_scripts/Logger.py", line 22, in <module>
log.logInfo()
File "/home/usr/.../python_scripts/Logger.py", line 19, in logInfo
self.logger.info("Hi")
Message: 'Hi'
Arguments: ()

我一定是做错了什么在python的oo编程。IT生成日志文件，但它是空的。

Answer 1

您的logInfo方法和"格式"中有一个错别字。参数，应该是formatter，我也改变了一点setLevel方法使用getLevelName，所以你可以动态地改变它:

import logging
logging_level = 'INFO'
class Logger:
def __init__(self):
self.logger = logging.getLogger(__name__)
self.logger.setLevel(logging.getLevelName(logging_level))
formatter = logging.Formatter('%(asctime)s - %(name)s%(levelname)s: %(message)s', datefmt='%m/%d/%Y %I:%M:%S%p')
file_handler = logging.FileHandler('logFile.log')
file_handler.setFormatter(formatter)
stream_handler = logging.StreamHandler() #if we want to print to consol
stream_handler.setFormatter(formatter)
self.logger.addHandler(file_handler)
self.logger.addHandler(stream_handler)

def logInfo(self):
self.logger.info("Hi")
log = Logger()
log.logInfo()

输出

07/18/2022 06:24:39PM - __main__INFO: Hi