These are exercises in myprogramminglab for python and i think the simpler the code the better:

1.Assume that play_list refers to a non-empty list, and that all its elements refer to values of type int. Write a statement that associates a new value with the first element of the list. The new value should be equal to twice the value of the last element of the list.

2.Given that k and j each refer to a non-negative int and that play_list has been defined to be a list with at least j+1 elements, write an expression that evaluates to a new list containing all the elements from the one at index k through the one at index j of list play_list . Do not modify play_list .

3.Given that k and j each refer to a non-negative int and that play_list has been defined to be a list with at least j elements, write an expression that evaluates to a new list containing all the elements from the one at index k through the one at index j-1 of list play_list . Do not modify play_list .