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import logging # noqa I251
import sys
CRITICAL = logging.CRITICAL
FATAL = logging.FATAL
ERROR = logging.ERROR
WARNING = logging.WARNING
INFO = logging.INFO
DEBUG = logging.DEBUG
NOTSET = logging.NOTSET
_loggers = set()
_log_level = NOTSET
DATE_FORMAT = "%Y-%m-%d %H:%M:%S"
DEBUG_LOG_FORMAT = "%(asctime)s %(levelname)s [%(filename)s:%(lineno)d] %(message)s"
LOG_FORMAT = "[%(levelname)s] %(message)s"
def get_logger(name: str) -> logging.Logger:
"""
Create a logger with the specified name. The logger will use the log level
specified by set_log_level()
"""
logger = logging.getLogger(name=name)
if _log_level == DEBUG:
formatter = logging.Formatter(fmt=DEBUG_LOG_FORMAT, datefmt=DATE_FORMAT)
else:
formatter = logging.Formatter(fmt=LOG_FORMAT)
handler = logging.StreamHandler(stream=sys.stdout)
handler.setFormatter(formatter)
logger.addHandler(handler)
# If we've already set the log level, make sure new loggers use it
if _log_level != NOTSET:
logger.setLevel(_log_level)
# Keep track of this logger so that we can change the log level later
_loggers.add(logger)
return logger
def set_log_level(log_level: int) -> None:
"""
Set the ML-Agents logging level. This will also configure the logging format (if it hasn't already been set).
"""
global _log_level
_log_level = log_level
for logger in _loggers:
logger.setLevel(log_level)
if log_level == DEBUG:
formatter = logging.Formatter(fmt=DEBUG_LOG_FORMAT, datefmt=DATE_FORMAT)
else:
formatter = logging.Formatter(LOG_FORMAT)
_set_formatter_for_all_loggers(formatter)
def _set_formatter_for_all_loggers(formatter: logging.Formatter) -> None:
for logger in _loggers:
for handler in logger.handlers[:]:
handler.setFormatter(formatter)
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