>>> a = [1,2,3,4]
>>> a[0]
1
>>> a[1]
2
>>> a[0] = 10
>>> a
[10, 2, 3, 4]


def type_list(x):        x[0] = 10        print xif __name__ == ‘__main__‘:        a = [1,2,3,4]        type_list(a)        print a[10,2,3,4][10,2,3,4]

tuple:>>> a = (1,2,3,4)>>> a[0]1>>> a[1]2>>> a[0] = 10Traceback (most recent call last):  File "<stdin>", line 1, in <module>TypeError: ‘tuple‘ object does not support item assignment

def type_tuple(x):        x[0] = 10        print xif __name__ == ‘__main__‘:        a = (1,2,3,4)        type_tuple(a)        print aTraceback (most recent call last):  File "type_tuple.py", line 7, in <module>    type_tuple(a)  File "type_tuple.py", line 2, in type_tuple    x[0] = 10TypeError: ‘tuple‘ object does not support item assignment

>>> a = {‘tom‘:97, ‘lisa‘:85}>>> a[‘tom‘]97>>> a[‘tom‘] = 75>>> a{‘lisa‘: 85, ‘tom‘: 75}def type_list(x):        x[‘tom‘] = 75        print xif __name__ == ‘__main__‘:        a = {‘tom‘:98, ‘lisa‘:85}        type_list(a)        print a{‘lisa‘: 85, ‘tom‘: 75}{‘lisa‘: 85, ‘tom‘: 75}

>>> a = ‘abcd‘>>> a[0]‘a‘>>> a[1]‘b‘>>> a[2]‘c‘>>> a[0] = ‘b‘Traceback (most recent call last):  File "<stdin>", line 1, in <module>TypeError: ‘str‘ object does not support item assignment

def type_str(x):        x = ‘bbbb‘        print xif __name__ == ‘__main__‘:        a = ‘abcd‘        type_str(a)        print a

bbbb
abcd

def type_number(x):        x = 100        print xif __name__ == ‘__main__‘:        a = 1        type_number(a)        print a1001