Coding Quiz Zone

>>>example = "snow world"
>>>example[3] = 's'
>>>print example

class tester:
    def __init__(self, id):
        self.id = str(id)
        id="224"
 
>>>temp = tester(12)
>>>print(temp.id)

class father:
    def __init__(self, param):
        self.o1 = param
 
class child(father):
    def __init__(self, param):
        self.o2 = param
 
>>>obj = child(22)
>>>print "%d %d" % (obj.o1, obj.o2)