There must be proper indentation in python in every block.
In taskB, task1 we have to use sum to add the string, we cannot just use append.
Extra Credits:
E.1 Tuples is a sequence of elements but unlike list, tuples cannot be changed, that is, they are immutable. Also tuples use paranthesis where as list uses square bracket. Values in a tuple can be accessed but they cannot be changed.
When we try to append to a tuple, an error is flagged saying a tuple does not have append function.
This is the consequence of the property of tuple that it cannot be changed. Also removing individual tuple elements is not possible.
E.2 If tuples have elements which are lists,we are able to add to these lists.
But this does not contradict the above observation because the tuple stores the reference to the list, not the list itself. Hence it is possible to append to the lists present in the tuple and still not make any changes to the tuple itself.
