EasyCV/easycv/utils/logger.py

57 lines
1.9 KiB
Python

# Copyright (c) Alibaba, Inc. and its affiliates.
import logging
from mmcv.utils import get_logger
from easycv.framework.errors import TypeError
def get_root_logger(log_file=None, log_level=logging.INFO):
"""Get the root logger.
The logger will be initialized if it has not been initialized. By default a
StreamHandler will be added. If `log_file` is specified, a FileHandler will
also be added. The name of the root logger is the top-level package name,
e.g., "easycv".
Args:
log_file (str | None): The log filename. If specified, a FileHandler
will be added to the root logger.
log_level (int): The root logger level. Note that only the process of
rank 0 is affected, while other processes will set the level to
"Error" and be silent most of the time.
Returns:
logging.Logger: The root logger.
"""
return get_logger(
__name__.split('.')[0], log_file=log_file, log_level=log_level)
def print_log(msg, logger=None, level=logging.INFO):
"""Print a log message.
Args:
msg (str): The message to be logged.
logger (logging.Logger | str | None): The logger to be used. Some
special loggers are:
- "root": the root logger obtained with `get_root_logger()`.
- "silent": no message will be printed.
- None: The `print()` method will be used to print log messages.
level (int): Logging level. Only available when `logger` is a Logger
object or "root".
"""
if logger is None:
print(msg)
elif isinstance(logger, logging.Logger):
logger.log(level, msg)
elif logger == 'silent':
pass
elif isinstance(logger, str):
_logger = get_logger(logger)
_logger.log(level, msg)
else:
raise TypeError(
'logger should be either a logging.Logger object, str, '
f'"silent" or None, but got {type(logger)}')