Short snippet showing how to have colored terminal logging output in Python.

SimpleColorLogging.py

import os
import logging


class _Color:
    PURPLE = '\033[95m'
    CYAN = '\033[96m'
    DARKCYAN = '\033[36m'
    BLUE = '\033[94m'
    GREEN = '\033[92m'
    YELLOW = '\033[93m'
    RED = '\033[91m'
    BOLD = '\033[1m'
    UNDERLINE = '\033[4m'
    END = '\033[0m'


class SimpleColorFormatter(logging.Formatter):
    _title = {
        "DEBUG": "{END}[{BOLD}DBUG{END}]{END}".format(**_Color.__dict__),
        "INFO": "{END}[{BOLD}{GREEN}INFO{END}]{END}".format(**_Color.__dict__),
        "ERROR": "{END}[{BOLD}{RED}ERR {END}]{END}".format(**_Color.__dict__),
        "WARNING": "{END}[{BOLD}{BLUE}WARN{END}]{END}".format(**_Color.__dict__)
    }

    def normalizePath(self, path):
        abs_path = os.path.abspath(path)
        pwd_path = os.getcwd()
        return abs_path.replace(pwd_path, ".", 1)

    def formatMessage(self, msg: logging.LogRecord):
        header = self._title.get(msg.levelname, self._title.get("INFO"))
        return("{} {} (\"{}\", line {}): {}".format(
            header,
            msg.module,
            self.normalizePath(msg.filename),
            msg.lineno,
            msg.message
        ))


def setupLogging(level="DEBUG"):

    # Add the color handler to the terminal output
    handler = logging.StreamHandler()
    formatter = SimpleColorFormatter()
    handler.setFormatter(formatter)

    # Set logging level
    root = logging.getLogger()
    root.setLevel(os.environ.get("LOGLEVEL", level))

    # Add the color handler to the logger
    root.addHandler(handler)

    return root


l = setupLogging()

l.debug("This is an debug.")
l.info("This is an info.")
l.warning("This is an warning.")
l.error("This is an error.")

raise ValueError("value")