stu.py

#importing logger file(log.py)
from log import getLog 
#Setting name to logger
logger =getLog('student.py')
class Student:
    def __init__(self,firstname,lastname,rollno):
        self.firstname=firstname
        self.lastname=lastname
        self.rollno=rollno
        #logging info - Student Creation
        logger.info("Created Student {}-{}".format(self.firstname,self.lastname))

    def Totalmarks(self,*args):
        try:
            totalmarks=sum(args)
            #logging totalmarks
            logger.info("Totalmarks:"+str(totalmarks))
            return totalmarks
        except Exception as e:
            logger.error(e)
            raise  
    def grade(self,totalmarks):
        logger.info("Inside Grade :"+str(totalmarks))
        if totalmarks>=400:
            return "Grade A"
        elif totalmarks>=300:
            return "Grade B"
        else:
            return "Grade C"


s1=Student("indhu","mathy",12)  
s=s1.Totalmarks(100,90,100)
print (s)
print (s1.grade(s))