import logging


def add(x,y):
    return x+y

def sub(x,y):
    return x-y

def mul(x,y):
    return x*y

def div(x,y):
    return x/y


add_result = add(10,5)
sub_result = add(10,5)
mul_result = add(10,5)
div_result = add(10,5)

#print(dir(logging))
#Logger.warning('add result', add_result)
logging.warning('Watch out!')
