来源：https://loguru.readthedocs.io/en/stable/api/logger.html#loguru._logger.Logger.add
from loguru import logger
logger.add("a.log", format="{message}")
其中 add 方法的定义如下
add(sink, *, level='DEBUG', format='<green>{time:YYYY-MM-DD HH:mm:ss.SSS}</green> | <level>{level: <8}</level> | <cyan>{name}</cyan>:<cyan>{function}</cyan>:<cyan>{line}</cyan> - <level>{message}</level>', filter=None, colorize=None, serialize=False, backtrace=True, diagnose=True, enqueue=False, context=None, catch=True, **kwargs)
help 文档中的信息
{'elapsed': datetime.timedelta(microseconds=11208), 'exception': None, 'extra': {}, 'file': (name='xlogger.py', path='/app/debug/xyd/xlogger.py'), 'function': '
', 'level': (name='DEBUG', no=10, icon='🐞'), 'line': 8, 'message': 'hello', 'module': 'xlogger', 'name': 'main', 'process': (id=7107, name='MainProcess'), 'thread': (id=281472900929312, name='MainThread'), 'time': datetime(2025, 5, 22, 3, 12, 22, 809009, tzinfo=datetime.timezone(datetime.timedelta(0), 'UTC'))}
format 中的字段选项
level
| Level name | Severity value | Logger method |
|---|---|---|
| TRACE | 5 | logger.trace() |
| DEBUG | 10 | logger.debug() |
| INFO | 20 | logger.info() |
| SUCCESS | 25 | logger.success() |
| WARNING | 30 | logger.warning() |
| ERROR | 40 | logger.error() |
| CRITICAL | 50 | logger.critical() |
其他字段
| Key | Description | Attributes |
|---|---|---|
| elapsed | The time elapsed since the start of the program | See datetime.timedelta |
| exception | The formatted exception if any, None otherwise | type, value, traceback |
| extra | The dict of attributes bound by the user (see bind()) | None |
| file | The file where the logging call was made | name (default), path / file.name or file.path |
| function | The function from which the logging call was made | None |
| level | The severity used to log the message | name (default), no, icon |
| line | The line number in the source code | None |
| message | The logged message (not yet formatted) | None |
| module | The module where the logging call was made | None |
| name | The name where the logging call was made | None |
| process | The process in which the logging call was made | name, id (default) |
| thread | The thread in which the logging call was made | name, id (default) |
| time | The aware local time when the logging call was made | See datetime.datetime |