使用python日志记录模块设置日志记录级别的2种不同方法之间的区别

时间：2020-03-11 04:27:39

标签： python python-logging

以下两种设置日志级别的方式有什么区别？两种方式都有一定的用例吗？

logger.setLevel(logging.DEBUG)

logging.basicConfig(level=logging.DEBUG)

我问这个问题是因为我使用了一个而不是另一个，并且导致了奇怪的重复记录输出：

(envCSSS) csss@csss-website:~/csss-site-in-dev/csss-site/src$ python3.7 manage.py getmail
2020-01-14 18:24:56 = INFO - [settings.py] BASE_DIR set to /home/csss
2020-01-14 18:24:56 = INFO - [settings.py] DEBUG set to True
2020-01-14 18:24:56 = INFO - [settings.py] ROOT_DIR set to /home/csss/csss-site-in-dev
2020-01-14 18:24:56 = INFO - [settings.py] STATIC_URL set to /STATIC_URL/
2020-01-14 18:24:56 = INFO - [settings.py] STATIC_ROOT set to /home/csss/static_root/
2020-01-14 18:24:56 = INFO - [settings.py] MEDIA_URL set to /MEDIA_URL/
2020-01-14 18:24:56 = INFO - [settings.py] MEDIA_ROOT set to /home/csss/media_root/
2020-01-14 18:24:56 = INFO - [settings.py] FILE_FORM_MASTER_DIR set to form_uploads/form_uploads/
2020-01-14 18:24:56 = INFO - [settings.py] FILE_FORM_UPLOAD_DIR set to form_uploads/form_uploads/temporary_files/
2020-01-14 18:24:56 = INFO - [settings.py] DJANGO_MAILBOX_ATTACHMENT_UPLOAD_TO set to mailbox_attachments/%Y/%m/%d/
2020-01-14 10:24:57 = WARNING - INFO:django_mailbox.management.commands.getmail:Gathering messages for csss gmail
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:INFO:django_mailbox.management.commands.getmail:Gathering messages for csss gmail
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:INFO:django_mailbox.management.commands.getmail:Gathering messages for csss gmail
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:INFO:django_mailbox.management.commands.getmail:Gathering messages for csss gmail
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:INFO:django_mailbox.management.commands.getmail:Gathering messages for csss gmail
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:INFO:django_mailbox.management.commands.getmail:Gathering messages for csss gmail
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:INFO:django_mailbox.management.commands.getmail:Gathering messages for csss gmail
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:INFO:django_mailbox.management.commands.getmail:Gathering messages for csss gmail
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:INFO:django_mailbox.management.commands.getmail:Gathering messages for csss gmail
.....................
2020-01-14 10:24:57 = WARNING - Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):
2020-01-14 10:24:57 = WARNING - WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:WARNING:csss_site:Traceback (most recent call last):

setLevel导致了上述问题，我不得不将其换成basicConfig来纠正日志记录问题。

1 个答案:

答案 0 :(得分：1)

文档本身是自我解释：

logger.setLevel

在这里，logger似乎是Logger的一个实例。通过使用setLevel，您可以为此特定记录器设置阈值级别。

logging.basicConfig(level=logging.DEBUG)

通过创建带有默认StreamHandler的{​​{1}}并将其添加到根记录器中，对记录系统进行基本配置。如果没有为根记录器定义处理程序，则功能Formatter，debug()，info()，warning()和error()将自动调用critical()。 / p>

如果尚未定义根记录器，则调用basicConfig()将为记录器设置处理程序和格式化程序。如果您在此处通过basicConfig，它将被设置为根记录器的级别。

您会注意到level实例上有setLevel，而logger模块上有basicConfig上。

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