To learn more about logging in Python, visit Better Stack Community. If you read the source code of the method, which returns a LogRecord object with the given logging information, you'll find that it merges the extra dict with the dict attribute of the returing LogRecord object, so you cannot retrieve the original extra dict afterwards in the formatter. A possible solution could look like this: class CustomFormatterExtra (CustomFormatter): customname 'customattribute. add colours in the formatter class) I would like to. As I use a lot of message in the tool I am writing I wonder if there is a way to write a log message with a colour. There is no way around that but to either change or replace the CustomFormatter that you are using. I am using logging module in Python and I already use a custom formatter that just changes the format of the message depending on level. The logging module will then use your custom formatter to format the log messages, including the timestamp, based on the specified time format. The Problem you are facing is, that you successfully add the attribute to the Record but your formatter just ignores it. The logging.Formatter class takes two arguments: fmt for the log message format (including placeholders for the timestamp), and datefmt for the custom time format.īy using this approach, you can easily customize the time format according to your preference and requirements. In this example, the time_format variable is set to "%Y-%m-%d %H:%M:%S", which will produce a timestamp in the format "YYYY-MM-DD HH:MM:SS". Logger.critical('This is a critical message') Logger.warning('This is a warning message') In the above example, a logger with name ‘demologger’ will be created. logger logging.getLogger (‘demologger’) tLevel (logging.INFO) We can give any name to the logger as we wish. After creating the logger object we have to set the log level using setLevel () method. # Now you can use the logger to log messages with your custom time format We can create this by using getLogger () method. # Set the log level (optional, can be DEBUG, INFO, WARNING, ERROR, CRITICAL) Logger = logging.getLogger('custom_logger') # Create a logger and set the custom formatter # Create a custom formatter with your desired time formatįormatter = logging.Formatter(fmt='%(asctime)s - %(levelname)s - %(message)s', datefmt=time_format) Source File: utilities.py From incubator-spot with Apache License 2.0.
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