logging-decorator.py

import logging 
from functools import wraps

# Example from: https://www.geeksforgeeks.org/create-an-exception-logging-decorator-in-python/

def create_logger(): 
	
	# create a logger object 
	logger = logging.getLogger('exc_logger') 
	logger.setLevel(logging.INFO) 
	
	# create a file to store all the 
	# logged exceptions 
	logfile = logging.FileHandler('exc_logger.log') 
	
	fmt = '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
	formatter = logging.Formatter(fmt) 
	
	logfile.setFormatter(formatter) 
	logger.addHandler(logfile) 
	
	return logger 

logger = create_logger() 

# you will find a log file 
# created in a given path 
print(logger) 

def exception(logger):
    def decorator(func):
        @wraps(func)
        def wrapper(*args, **kwargs):
            try:
                return func(*args, **kwargs)
            except:
                issue = "exception in "+func.__name__+"\n"
                issue = issue+"=============\n"
                logger.exception(issue)
                raise
        return wrapper
    return decorator 


@exception(logger) 
def divideByZero(): 
	return 12/0

# Driver Code 
if __name__ == '__main__': 
	divideByZero()