Coding Quiz Zone

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

>>>example = "snow world"
>>>print("%s" % example[4:7])

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)

string = "my name is x"
for i in ' '.join(string.split()):
    print (i, end=", ")

a = [0, 1, 2, 3]
i = -2
for i not in a:
    print(i)
    i += 1

a = [0, 1, 2, 3]
for a[0] in a:
    print(a[0])

a = [0, 1, 2, 3]
for a[-1] in a:
    print(a[-1])

string = "my name is x"
for i in string.split():
    print (i, end=", ")