colorful-logger 0.0.4

A colorful logger for python3.

python-logger

Colorful logger for python3

How to use

Install

pip install colorful-logger

Usage

1 default logger

You can directly use the default logger, the colored logs will be printed on the terminal, and the default logger level is warning.

from colorful_logger import logger

logger.debug("This is a debug message.")
logger.info("This is a info message.")
logger.warning("This is a warning message.")
logger.error("This is a error message.")
logger.fatal("This is a fatal message.")

2 custom logger

You can also change the log level, save the log to a file, change the logger name, and the log may not be output to the terminal.

from colorful_logger import get_logger
from colorful_logger.logger import DEBUG

logger = get_logger(name="sample_logger", level=DEBUG, file_path="./test.log")

logger.debug("This is a debug message.")
logger.info("This is a info message.")
logger.warning("This is a warning message.")
logger.error("This is a error message.")
logger.fatal("This is a fatal message.")

The contents of the log file:

[DEBUG] 2021-05-21 15:08:42 test.py:8 - This is a debug message.
[INFO] 2021-05-21 15:08:42 test.py:9 - This is a info message.
[WARNING] 2021-05-21 15:08:42 test.py:10 - This is a warning message.
[ERROR] 2021-05-21 15:08:42 test.py:11 - This is a error message.
[CRITICAL] 2021-05-21 15:08:42 test.py:12 - This is a fatal message.

As you can see, the log saved to the file uses the default formatter, so it is not in color.

3 basic config

Use the basic_logger function to configure the global logger.

from colorful_logger import basic_logger
from colorful_logger.logger import INFO

basic_logger(level=INFO, show=False, file_path="./test.log")

Then all loggers generated in other files will use this configuration.

# a.py
import logging

logger = logging.getLogger("a")

# b.py
import logging

logger = logging.getLogger("b")

When the level is set to DEBUG or NOSET, there may be logs generated by other third-party libraries when using the global configuration.

4 child logger

If you don't want to see the logs generated by third-party libraries, you need to use the child_logger method.

from colorful_logger import get_logger
from colorful_logger.logger import DEBUG

# parent logger
logger = get_logger(name="sample_logger", level=DEBUG, file_path="./test.log")

# child logger in other files
from colorful_logger import child_logger

# child1.py
child1 = child_logger("child1", logger)
# child2.py
child2 = child_logger("child2", logger)
# child3.py
child3 = child_logger(__name__, logger)

If all loggers in your project have only one parent logger, you can reimplement a chil_logger method.

from colorful_logger import get_logger, child_logger
from colorful_logger.logger import DEBUG

# parent logger
logger = get_logger(name="sample_logger", level=DEBUG, file_path="./test.log")

def my_child_logger(name: str):
    return child_logger(name, logger)

# child1.py
child1 = my_child_logger("child1")
# child2.py
child2 = my_child_logger("child2")
# child3.py
child3 = my_child_logger(__name__)