5.py

class CallDetail:
    c1=0
    c2=0
    c3=0
    def __init__(self,c,r,d,co):
        self.cl=c
        self.rcv=r
        self.dur=d
        self.code=co
    def disp(self):
        print(self.cl,self.rcv,self.dur,self.code)
class util:
    def __init__(self):
        self.list_of_call_objects=[]
    def parse_customer(self,list_of_call_string):
        for i in list_of_call_string:
            x=i.split(",")
            o=CallDetail(*x)
            self.list_of_call_objects.append(o)
    def display(self):
        for i in self.list_of_call_objects:
            i.disp()
            
call1='1234,4321,10,STD'
call2='5678,8765,20,Local'
call3='9632,2369,30,ISD'

list_of_call_string=[call1,call2,call3]
util().parse_customer(list_of_call_string)
ob=util()
ob.parse_customer(list_of_call_string)
ob.display()