Root logger is the entity where all the different types of logs are configured to this entity and stored in the file path given. Root logger is the default logger. one logger cant be used twice in the file. it cant be changed once it is configured. python code: import logging logging.basicConfig( level=logging.INFO, filename="sample.log", format="%(asctime)s :: %(levelname)s :: %(message)s", ) a = int(input("enter the number a: ")) b = int(input("enter the number b: ")) def hypotenuse(a, b): return (a ** 2 + b ** 2) ** 0.5 logging.info("The hypotense of {0} and {1} is {2}".format(a, b, hypotenuse(a, b)))

we can create our own loggers also. steps needed to create: 1) create a logger with custom name 2) set the level for this logger 3) create a filehandler where it needs to store the code. 4) create a formatter 5)set the formatter to the file 6) add the file handler to the file. Lets make this in to action Python code: import logging #step1 creating the logger logger = logging.getLogger(__name__) # now we need to set the level, filename to log, formatter # step2 setting the level logger.setLevel(logging.INFO) # step3 setting the file handler and the formatter file_handler = logging.FileHandler("sample.log") # Step 4 settiing up the formatter formatter = logging.Formatter("%(asctime)s :: %(levelname)s :: %(message)s") #Step5 setting the formatter to the file file_handler.setFormatter(formatter) #step6 adding the file handler to the logger logger.addHandler(file_handler) a = int(input("enter the number a: ")) b = int(input("enter the number b: ")) try: def div(a, b): return a / b logging.info("The Division of {0} and {1} is {2}".format(a, b, div(a, b))) except ZeroDivisionError as exc: logging.info("Division cant be done because the denominator is Zero")