我遇到了一个与实例属性有关的奇怪问题。我有一个变量logger，我希望它是一个实例属性。但是，我得到错误AttributeError: can't set attribute，除非将属性logger移到__init__()函数之外，这意味着我将logger声明为类属性(不是我想要的)。在

下面是我的代码片段：class MyScraper(ABC,scrapy.Spider):

"""Abstract base class for scraping non JS Web pages"""

#logger = None # Commented out, as I don't want class instance

def __init__(self, *args, **kwargs):

self.connection = None

self.channel = None

self.topic = None

log_format = "%(asctime)s - %(levelname)s - %(message)s"

log_level = 10

handler = TimedRotatingFileHandler("{0}.log".format(kwargs['log_filename']), when="midnight", interval=1)

handler.setLevel(log_level)

formatter = logging.Formatter(log_format)

handler.setFormatter(formatter)

# add a suffix which you want

handler.suffix = "%Y%m%d"

#need to change the extMatch variable to match the suffix for it

handler.extMatch = re.compile(r"^\d{8}$")

self.logger = logging.getLogger('my_logger') #

# finally add handler to logger

self.logger.addHandler(handler)

# Set up messaging infrastructure ...

为什么我会遇到这个错误，以及如何修复它？在